Friday, 29 March 2024

News

veggiegirljicama

What’s crunchy, sweet, low in calories, high in fiber, with virtually no fat? Jicama!
 
Pronounced HEE-kah-muh, this vegetable is a popular dietary staple in points south of our border, but may be a bit underappreciated in our culinary culture. Even so, many have embraced it enthusiastically, using it creatively in ways that go far beyond a place on a raw veggie platter.

Jicama, a legume, is also known as the yam bean, and is a low-growing vine native to Mexico. A member of the morning glory family and a relative of the sweet potato, jicama is best known for its large, edible tuberous root.

The other parts of the jicama plant – the vine, leaves, and seeds – contain poisonous compounds and should not be eaten.

Its country of origin, as well as the turnip-like shape and potato-like coloring of its root, serve as inspiration for a couple of its other monikers: Mexican turnip and Mexican yam.

If left to grow indefinitely, jicama roots – those lumpy, humble-looking orbs found in most supermarket produce aisles – can become amazingly big. The largest recorded jicama root was a 23 kilogram specimen from the Philippines. That’s just over 50 pounds!

I doubt any of us will see such gargantuan roots, however, as most jicamas slated for market remain under six pounds.

Jicama has been cultivated by all Mesoamerican civilizations.

The Spanish introduced it to the Philippines in the 17th century, and from there it spread throughout Asia, where it remains popular in the cuisines of China, Vietnam, Indonesia, Thailand, Malaysia, India and its Asian landing place, the Philippines.

The root was a popular staple on ocean-traversing ships prior to refrigeration because it stored well, could be eaten raw and was thirst-quenching.

Jicama is available year-round, with its peak season from December to June.

Its light brown, papery skin is tough and should be cut off with a sharp knife to expose jicama’s firm white flesh, which may be used raw or in some cooked applications.

Jicama is moist, crunchy and pleasantly sweet, with a texture similar to a raw potato. Some describe its flavor as somewhat nutty, or as a cross between a water chestnut and an apple.

It’s a popular street food in Mexico, where it’s served raw (sometimes on a stick) with a squeeze of lime and a sprinkle of spicy chili powder.

It’s often combined in salads with citrus fruits such as oranges, tangerines or grapefruits, or in salsas with tropical fruits such as mango and pineapple.

It becomes an unusual component in slaws with ingredients like Napa cabbage, carrots, snow peas, red peppers, mango or cilantro.

Combined with watermelon, mint, lime juice and honey, a refreshing salad is formed.

In addition to these wonderful flavor combinations, chefs have been known to successfully combine jicama with chile peppers, ginger, pumpkin seeds (known as pepitos in Mexico) and queso fresco, a style of Mexican cheese.
 
Jicama provides crunch and texture in spring rolls or in sushi in place of cucumber.

Similar to water chestnuts, jicama can be added to stir fries. Quick cooking methods – or addition at the last minute - are best to retain its characteristic fresh crunch.

Some cooks boil and mash it like potatoes, others add it to stews.

Jicama may also be marinated and grilled. A few minutes on each side until grill marks form is enough.

Jicama, which is composed of nearly 90 percent water, is high in carbohydrates in the form of dietary fiber.

It contains stores of vitamins C, B and A, along with calcium and phosphorous.

When shopping for jicama, look for medium-sized firm tubers with dry roots.

If allowed to become too large, jicama’s sugars will convert to starch, making the flesh woody. Hence the recommendation that roots larger than the size of two fists be avoided.

Be sure not to purchase jicama that has soft or wet spots, as this can indicate rot.

As to appropriate storage of your jicama, who would have thought of this as a controversial subject? Apparently there are two opposing schools of thought.

Some recommend storing it in the fridge in a plastic bag, where they claim it will keep well for about two weeks.

In contrast to this, others eschew refrigeration, saying its moisture can cause mold and early spoilage. They insist that storing jicama in a cool, dry, dark place outside the fridge is the way to go.

If using this storage method, the recommended temperature is between 53 and 60 degrees Fahrenheit. Proponents claim that if jicama roots are fresh when purchased, they’ll keep for between one and four months when stored this way.

In case you’re wondering, I’ve had bad luck storing jicama in the fridge and prefer to store it in my pantry. I’ve never kept it for more than a couple of weeks, though, so can’t attest to longevity.

Both sides do agree that jicama should be stored in the fridge once cut.

The creamy texture of avocado is a pleasant contrast to jicama’s fresh, snappy crunch, and the recipe offered today combines these two ingredients, as well as the supporting flavors of lime, scallions and mint.

If available, experiment with different types of limes (such as golden limes like the Rangpur or calamansi). Since the acidity of each variety will be different, adjust the ratio of lime to oil as needed.

Before I go, did you know that our friend, jicama, has a stepbrother of sorts, the milk jicama (jicama de leche in Spanish)?

This jicama is oblong in shape and produces a milky juice.

In contrast, the more popular turnip-like jicama sold in stores is called jicama de agua (or water jicama) because it produces a translucent juice.

What’s amazing is that both these jicamas grow from the same seed.

Have a wonderful Sunday! Enjoy this unseasonably balmy weather, which is perfect for a refreshing salad and the pleasant crunch of jicama.

Avocado and jicama salad with lime vinaigrette

1 head butter lettuce, the leaves separated
1 head Romaine lettuce, the heart leaves only, or several handfuls small spinach leaves and arugula leaves
1 small jicama, about ½ pound
2 large avocados, ripe but firm
Zest of one lime, plus one tablespoon juice
5 tablespoons extra virgin olive oil
Sea salt and freshly ground pepper
2 scallions, including an inch of the green stems
15 mint leaves, torn into small pieces

Wash and dry the greens. Slice them into narrow ribbons and set aside.

Peel the jicama and sliver it into very thin matchsticks.

Peel and slice the avocados into wedges.

Whisk the lime zest, juice and olive oil together with a few pinches of salt.

Slice the scallions into long, thin slivers.

Toss the greens with the jicama, avocado, scallions, mint and a few pinches of salt. Then dress the salad with enough vinaigrette to coat lightly but thoroughly.

Season with pepper and serve.

This recipe by Deborah Madison is from the cookbook “Local Flavors: Cooking and Eating from America’s Farmers’ Markets.”

Esther Oertel, a freelance writer, cooking teacher, and speaker, is passionate about local produce and all foods in the vegetable kingdom. She welcomes your questions and comments and may be reached at This email address is being protected from spambots. You need JavaScript enabled to view it..

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Scientists from the Department of Fish and Game (DFG) and PRBO Conservation Science have completed an innovative study on the effects of climate change on vulnerable birds.

This first-of-its-kind study prioritizes which species are most at risk and will help guide conservation measures in California.

The study was published Friday in the journal PLoS ONE.

“What’s most exciting about the study is that our unique approach is one that other scientists and resource managers can duplicate to help them conserve wildlife in the face of climate change,” said PRBO Ecologist Tom Gardali, the study’s lead author.

“Not only does our study look at which birds will be most at risk given a changed climate, it also evaluates how climate change, piled on top of all the existing threats such as development and invasive
species, will affect birds,” said Gardali. “This gives a more comprehensive picture, and provides the information necessary to help allocate scarce dollars for conservation.”

The study combines existing stressors such as habitat loss and degradation with the vulnerability of California’s bird species to projected climate change impacts to produce a prioritized list of at-risk species for conservation action.

The research shows that nearly 130 species of birds are vulnerable to the predicted effects of climate
change and that 21 of the state’s 29 threatened and endangered bird species (72 percent) will be further impacted by climate change, increasing their risk of extinction.

“Lists of at-risk species like ours are simply a first step. Now conservationists and resource managers need to use the list and other resources to identify how best to spend limited conservation dollars to
benefit birds, other wildlife and human communities,” noted Dr. Nat Seavy, study co-author and PRBO scientist.

The study also found that wetland species are more vulnerable than other groups of birds because they are specialized on habitats that will be threatened by sea level rise and changes in precipitation.

The most vulnerable wetland birds include the California black rail, California and Yuma clapper rails and three species of song sparrow found only in the tidal marshes of San Francisco Bay.

Species that make a living at sea or near-shore waters and that nest on islands or rocky shores are
also highly vulnerable. These species include the Cassin’s auklet, common murre, black oystercatcher and the iconic white and brown pelicans.

“By using this information to prioritize and implement conservation actions now, managers can help to reduce negative impacts of climate change,” said DFG Chief Deputy Director Kevin Hunting. “This
research is yet another example of how the DFG and partners like PRBO are actively addressing climate change, engaging in adaptation planning, and taking important steps towards safeguarding fish, wildlife and habitats across the state for future generations to enjoy.”

The complete list of species and the climate vulnerability scores are
available online through the California Avian Data Center, http://data.prbo.org/apps/bssc/index.php?page=climate-change-vulnerability .

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After drawing much public attention for his historic trek into California, the gray wolf designated as OR7 has turned north and crossed back into Oregon.
 
Originally part of a wolfpack in northeastern Oregon, OR7 wandered more than 1,062 miles in Oregon in September through December of last year before crossing into California last Dec. 28.

Gray wolves were extirpated in California the 1920s, leading to speculation that OR7 might be the first wolf to reestablish roots in the Golden State.
 
While in California, the wolf trekked south through eastern Siskiyou County, traveled through northeastern Shasta County and then resided in Lassen County for a few weeks, wildlife officials reported Friday.

On Feb. 11 he reentered Shasta County and then, about a week later, he crossed north into Siskiyou County, the Friday report explained.

The Department of Fish and Game (DFG) has continued to monitor his whereabouts through the use of a satellite tracking collar, and has been updating his status at www.dfg.ca.gov/wolf/ .
 
DFG biologists who have been closely monitoring the wolf’s position and progress say they have been impressed with his ability to travel considerable distances into new territory and then return, following a different route, to locations he has previously visited (possibly through his use of scent-marking), sometimes after a few weeks have passed.
 
Over the past two months, DFG has received many telephone calls and e-mails reporting sightings of OR7, but nearly all of these reports were inconsistent with the satellite location data.

Photographs and physical descriptions provided to DFG by the public were consistently determined to be an animal other than a wolf (usually a coyote in winter pelt).

In some cases, the available information was insufficient to make any confident determination of the species observed. However, in the past few days OR7 may have been observed in northern Siskiyou County.
 
In at least one instance, private citizens photographed tracks likely to have been made by OR7. Some of those photographs are available for viewing on DFG’s website.
 
After traveling 900 miles in California (calculated as air miles, not the actual distance traveled, which was greater), OR7 crossed the state line from Siskiyou County and back into Oregon on March 1.

DFG biologists have described his behavior as dispersal, where a young wolf seeks to find a mate or another wolf pack. That search has not been resolved for OR7 in California and his next movements cannot be predicted with any certainty.

It remains possible he will return to California in the future, officials said.

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LAKE COUNTY, Calif. – Five dogs at Lake County’s animal shelter are ready to go to new homes this week.

Lab, heeler, American bulldog, boxer and Rhodesian Ridgeback mixes have been cleared for adoption.

Dogs that are adopted from Lake County Animal Care and Control are either neutered or spayed, microchipped and, if old enough, given a rabies shot and county license before being released to their new owner. License fees do not apply to residents of the cities of Lakeport or Clearlake.

If you're looking for a new companion, visit the shelter. There are many great pets hoping you'll choose them.

The following dogs at the Lake County Animal Care and Control shelter have been cleared for adoption (additional dogs on the animal control Web site not listed are still “on hold”).

labmix3

Female lab mix

This female Labrador Retriever mix is ready for a new home.

She has a short brown coat and brown eyes.

Find her in kennel No. 3, ID No. 31902.

heelermix5

Heeler-pit bull mix

This male heeler-pit bull mix is 1 year old.

He has tan and white coloring and a short coat, and is not yet neutered.

He is in kennel No. 5, ID No. 31954.

rhodesianmix6

Rhodesian Ridgeback-boxer mix

This male Rhodesian Ridgeback-boxer mix is 10 months old.

He has a short, white and black spotted coat, and is neutered.

Find him in kennel No. 6, ID No. 31955.

Delilah16

'Delilah'

“Delilah” is a 2-year-old female Labrador Retriever-boxer mix.

She has black coloring and a short coat.

Shelter staff said she’s is super sweet, affectionate and housebroken.

She is in kennel No. 16, ID No. 31916.

bulldog13

American bulldog mix

This female American bulldog mix is 2 years old.

She has brown and brindle coloring, weighs 80 pounds and has been spayed.

She is in kennel No. 13, ID No. 31784.

Adoptable dogs also can be seen at http://www.co.lake.ca.us/Government/Directory/Animal_Care_And_Control/Adopt/Dogs_and_Puppies.htm or at www.petfinder.com.

Please note: Dogs listed at the shelter's Web page that are said to be “on hold” are not yet cleared for adoption.

To fill out an adoption application online visit http://www.co.lake.ca.us/Government/Directory/Animal_Care_And_Control/Adopt/Dog___Cat_Adoption_Application.htm.

Lake County Animal Care and Control is located at 4949 Helbush in Lakeport, next to the Hill Road Correctional Facility.

Office hours are Monday through Friday, 8 a.m. to 5 p.m., and 1 p.m. to 3 p.m., Saturday. The shelter is open from 10:30 a.m. to 4:30 p.m. Monday through Friday and on Saturday from 1 p.m. to 3 p.m.

Visit the shelter online at http://www.co.lake.ca.us/Government/Directory/Animal_Care_And_Control.htm.

For more information call Lake County Animal Care and Control at 707-263-0278.

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KELSEYVILLE, Calif. – The Kelseyville Unified School District has added another measure of protection to its campuses in order to safeguard students, staff and community members.

Portable defibrillators were placed around district’s campuses about a month and a half ago, an effort made possible through a grant, according to Matt Cockerton, principal of Kelseyville High School.

“We started planning some time ago to get these on campus,” said Cockerton.

An event last year raised awareness of the need for such life-saving devices, he said.

“We had a basketball player go into arrest last school year and we almost lost him during a practice session,” said Cockerton.

Although Kelseyville Fire’s main station is just down the street, it happened that day that they were on a call and couldn’t respond in time, he said.

Teachers on campus know cardiopulmonary resuscitation and were able to care for the boy, but Cockerton said the situation was “touch and go.”

Kelseyville Fire helped the district apply for the grant to cover the defibrillators, which cost about $1,000 each, according to Cockerton.

He said Kelseyville High got the lion’s share of the grant to pay for three defibrillators – one at the main building, one at the gym and one at the track and football field.

Each of the other campuses received one of the life-saving decides, he said.

Cockerton said the models the district purchased interact with those used by Kelseyville Fire.

Staff has been trained on the devices, which Cockerton said are very simple to use, with simple instructions that walk users through the steps. He said the defibrillators also must regularly be maintained and tested.

The three new devices are a good start, but Cockerton said they would like to add more to the high school campus if the opportunity arises.

“There will be a day that schools will all have them,” he said.

E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow Lake County News on Twitter at http://twitter.com/LakeCoNews, on Tumblr at www.lakeconews.tumblr.com , on Google+, on Facebook at www.facebook.com/pages/Lake-County-News/143156775604?ref=mf and on YouTube at www.youtube.com/user/LakeCoNews .

kansassupercell

When you read the following paragraph, consider the following: Tornado season hasn't even started yet.

On Jan. 22 and 23, 2012, more than 37 tornadoes struck the southern USA. Ten of them tore across the Lower Mississippi Valley into Alabama.

Worst hit were St. Clair and Jefferson County, Ala., where 2 people were killed, about 100 others injured, and at least $30 million in damage was done. It was a chilling reminder of the April 2011 onslaught of deadly tornadoes that took a staggering toll across southern and Midwestern states.1

In southern parts of the USA, tornado season tends to peak in springtime. Yet January 2012 produced 73 winter tornadoes – third most of any January in recorded history.

Most of them struck southern states. And since over a quarter of the incredible 1,688 twisters confirmed across the US in 2011 occurred in the four-state region of Alabama, Georgia, Mississippi and Tennessee, residents there are becoming ever more wary of darkening skies.

“Even with our advances in science and communications, we can still be surprised by the deadliest storms,” said NOAA scientist Steve Goodman. “But NOAA is working with NASA and university researchers to give more lead time in tornado warnings.”

Southern tornadoes are especially insidious and challenging to track. The hilly, forested terrain in southern states makes an approaching twister harder to spot than in the flat Midwest. In the south you might not see the first evidence of an approaching tornado until it's almost in your back yard.

An Alabama resident describes the scene just before one of the April 2011 twisters struck near his home: “Suddenly, all the trees in my back yard corkscrewed violently, in unison, toward the northwest.” Moments later, the storm was there.

Rain wrapped tornadoes are especially hard to see, as are night-time tornadoes. And records indicate that southern tornadoes often strike at night.

To reduce the surprise, NOAA and NASA2 are developing the Geostationary Operational Environmental Satellite-R, or “GOES-R series,” with the first expected to launch in late 2015.

These next-generation weather satellites bristle with state-of-the-art instruments for improved scouting of these killer storms, even at night.

Tornadoes are, by their very nature, difficult to pin down. The Advanced Baseline Imager (ABI) on GOES-R will improve meteorologists' ability to assess conditions that spawn twisters.

Compared to current GOES imagers, the ABI provides twice the spatial resolution, three times as many channels of information, and more than five times the update rate.

“ABI will give us a much clearer picture of the clouds – where and how tall they are, how much and what kind of moisture they hold, and how they are moving and intensifying,” said NOAA research meteorologist Tim Schmit.

Most importantly, ABI can better detect the super-cold “overshooting tops” that mean severe weather is imminent. “Overshooting tops portend huge energy inside the cloud – it takes tremendous energy and upward velocity to poke through the lid of the tropopause,” explained Schmit.

“During episodes of severe weather, ABI can show conditions every 30 to 60 seconds. The system in use now only shows them every 7.5 minutes. And in normal mode, ABI will send readings over the continental U.S. every 5 minutes as opposed to every 15-30 minutes,” Schmit said.

Lightning is another key to tornadoes.

“Studies show that sudden changes in the total lightning correlate with [the onset of] tornadoes,” said Goodman.

Detecting lightning is a new specialty of GOES-R.

“GOES-R's Geostationary Lightning Mapper, or GLM, will see all the lightning: cloud-to-ground, cloud-to-cloud, and inside each cloud. And since this is the first time we'll have lightning detection from geostationary orbit, it means GOES-R will constantly monitor and map the lightning across the western hemisphere,” Goodman said.

The GLM is expected to give seven more minutes of lead time in tornado warnings. Average lead time now is 13 minutes.

“With GOES-R you'll have upwards of 20 minutes to get to a safe haven,” said Goodman.

That sure beats standing in your back yard, in the dark, waiting for the trees to twist.

Dauna Coulter writes for the National Aeronautics and Space Administration.

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tuleyomeravenna

       

LAKE COUNTY, Calif. – A remarkable partnership project recently made great strides in eradicating a potentially devastating infestation of Ravenna grass (Saccharum ravennae) from some 70 miles of Cache Creek in Lake and Yolo counties.

This invasive weed, which was deliberately introduced to California as an ornamental and has been described as “pampas grass on steroids,” could profoundly degrade riparian areas throughout the region if not controlled, and control is particularly difficult because so many of the plants are found in steep, inaccessible terrain deep in the Cache Creek Wilderness.

The control project was sponsored by the tri-county Cache Creek Watershed Forum stakeholder group, with primary management responsibility shared by the East Lake and Yolo County Resource Conservation Districts and Bureau of Land Management.

One of the first things the group did was ask Tuleyome President Andrew Fulks for help, since he had conducted a very successful tamarisk eradication project in this remote area several years before.

Using kayaks, Tuleyome volunteers pinpointed hundreds of clumps of Ravenna grass with GPS equipment, many perched too high on the canyon walls to be reached from the creek level.

The scope of the infestation was far worse than anyone had imagined, and plainly too extensive to tackle with volunteers alone.

Working together, the Yolo and Lake County RCDs then obtained funding through an American Recovery and Reinvestment grant, with supplementary money from the Rose Foundation to cover the segments on BLM land.

Under the supervision of Yolo RCD Vegetation Management Specialist Gillies Robertson, work on the section downstream from Cache Canyon proceeded uneventfully, but the upstream portion remained daunting: not only was the terrain remote and rugged, its designation as federal Wilderness precluded the use of any form of motorized transportation.

This meant that work crews faced the prospect of long off-trail hikes in bear country, carrying massive quantities of gear, merely to reach the work site.

In the words of East Lake RCD Watershed Coordinator Greg Dills, “This was one of the most tactically difficult projects we have been involved with to date. There were multiple project partners, some of the most rugged terrain in Northern California, restrictions due to Wilderness designation, multiple landowners (both private and public), and bears.”

The conundrum was solved by Cache Canyon River Trips from Yolo County, which provided two large rubber rafts – rafts that usually carry white water recreationists – to transport equipment, supplies and work crews down the creek from the Clear Lake dam and through 25 miles of project area.

Lake County’s Back Country Horsemen also offered to pack in gear, though it turned out that their assistance wasn’t needed.

Although the job remained difficult, it was no longer impossible; starting in mid-August 2011 an estimated 90 percent of the Ravenna grass on Cache Creek was eradicated, providing a model for protecting the biodiversity of a precious wilderness area while simultaneously guarding the special values that make wilderness unique.

The problem now is to mop up the scattered plants left behind and to exterminate seedlings before another widespread stand can become established.

A little grant money remains for an early treatment in the spring, and both RCDs are looking for additional funding sources to continue the project in the future.

Monitoring will be necessary for several years to insure control, and rafters, kayakers, equestrians and hikers are invited help this effort by surveying for regrowth as they recreate in the area.
             
Victoria Brandon is a Tuleyome board member. She represents the Sierra Club on the California Invasive Species Advisory Committee. Brandon lives in Lower Lake, Calif.

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tuleyometracks

021812roboticskids

KELSEYVILLE, Calif. – The Lake County Office of Education’s Science Center at Taylor Observatory recently organized the first countywide robotics workshop.

The workshop took place on Saturday, Feb. 18, at the center's facility in Kelseyville, under the direction of Facility Coordinator Barbara McIntyre.

Michael Schenck, director of technology for Konocti Unified School District and his third grade son Alex, who has been working with Lego robots for more than three years, helped to support the effort.

The workshop was run by members of an award-winning robotics team from Folsom; ninth grader Akshay Rathish and eleventh grader Saiyeesh Rathish along with their father, Rathish Jayabharathi, an engineer for Intel.

After nearly a decade of supporting his sons’ interest in robotics, Rathish became inspired to help other robotics groups develop. He says that “robotics is one way for kids to learn engineering concepts without knowing that they are actually learning.”

This was the first in what is planned to become an ongoing series of workshops for children and adults throughout the community.

In each of the two-hour sessions, 20 students, ages 9 to 14 worked in teams. Each group included two roboticists, one laptop and one Lego MindStorm NXT 2.0 robotics kit.

During the first session, facilitators provided a brief overview of robots in our world today, leading into the hands-on construction of a robot and finishing with general programming techniques.

021812roboticsfamily

In the second session participants utilized these robots and programmed them to perform various goals; move in a square or triangle pattern from a series of scripted commands, move forward or backward when the sound sensor detects a loud noise and follow a line using the reflected light sensor.

Children and adults were equally excited about bringing Legos “to life” with these fun and intriguing robotics kits.

This interactive learning modality inspires interest in Science, Technology, Engineering and Mathematics (STEM) skills in a rich, experiential environment.

Children's Museum of Art and Science (CMAS), in partnership with Konocti Unified School District, is piloting a program at Lower Lake Elementary this year.

CMAS' goal is to act as a facilitator to bring students together with these kinds of materials, increase awareness and support for kids having access to experiences like these.

Upper Lake High School has been working with advanced robotics concepts and programming skills for several years, with students attending state and national competitions.

The Taylor Observatory has developed a strong interest in integrating robotics into core curricular areas, after-school programs, weekend and summer workshops and science camps throughout Lake County.

Several countywide K-12 staff members were in attendance as parents, community members and interested

supporters.

021812roboticstrack

“My son would not stop talking about the workshop all evening long. We hit upon something that I think he would like to continue working on,” said Bill Grossner, network systems analyst of Kelseyville Unified School District commented.

If you would like additional information about the Taylor Observatory's venture into the exciting world of robotics, or would like to have your child added to the list of future participants, please contact Barbara McIntyre at 707-262-4121 or via e-mail at This email address is being protected from spambots. You need JavaScript enabled to view it. .

The Taylor Observatory-Norton Planetarium Web site can be found at www.taylorobservatory.org .

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ulhsacadeca020412

UPPER LAKE, Calif. – Upper Lake High School is asking for the community’s help in raising funds to send its Academic Decathlon team to the state competition this month.

The team, which won the Lake County competition Feb. 4, needs about $3,000 to attend the California Academic Decathlon, according to Upper Lake High Superintendent/Principal Pat Iaccino.

The California Academic Decathlon takes place March 15-18 in Sacramento. This year’s topic is “The Age of Empire.”

Upper Lake has been a longtime powerhouse in the Academic Decathlon competition.

Upper Lake Coach Anna Sabalone and Assistant Coach Angel Hayenga are now preparing their team for the big competition.

Winning team members are Jaqueline Estrada, Jordan Austin, Shayla Wyman, Byron Garcia, Christine Randall, Carlos Valencia, Oscar Nieves, Farhad Hussain, Justine Moran, Jamie Maddock and Krista Coleman.

Iaccino said community members wanting to contribute can contact the high school at 707-275-2338.

E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow Lake County News on Twitter at http://twitter.com/LakeCoNews, on Tumblr at www.lakeconews.tumblr.com , on Google+, on Facebook at www.facebook.com/pages/Lake-County-News/143156775604?ref=mf and on YouTube at www.youtube.com/user/LakeCoNews .

nasayoungstars

Astronomers have spotted young stars in the Orion nebula changing right before their eyes, thanks to the European Space Agency's Herschel Space Observatory and NASA's Spitzer Space Telescope.

The colorful specks – developing stars strung across the image – are rapidly heating up and cooling down, speaking to the turbulent, rough-and-tumble process of reaching full stellar adulthood.

The rainbow of colors represents different wavelengths of infrared light captured by both Spitzer and Herschel.

Spitzer is designed to see shorter infrared wavelengths than Herschel. By combining their observations, astronomers get a more complete picture of star formation.

NASA's Jet Propulsion Laboratory in Pasadena, Calif., manages the Spitzer mission for NASA, and also plays an important role in the European Space Agency-led Herschel mission.

In the portion of the Orion nebula pictured, the telescopes' infrared vision reveals a host of embryonic stars hidden in gas and dust clouds. These stars are at the very earliest stages of evolution.

A star forms as a clump of this gas and dust collapses, creating a warm glob of material fed by an encircling disk. In several hundred thousand years, some of the forming stars will accrete enough material to trigger nuclear fusion at their cores, and then blaze into stardom.

Herschel mapped this region of the sky once a week for six weeks in the late winter and spring of 2011.

To monitor for activity in protostars, Herschel's Photodetector Array Camera and Spectrometer probed long infrared wavelengths of light that trace cold dust particles, while Spitzer gauged the warmer dust emitting shorter infrared wavelengths.

In this data, astronomers noticed that several of the young stars varied in their brightness by more than 20 percent over just a few weeks.

As this twinkling comes from cool material emitting infrared light, the material must be far from the hot center of the young star, likely in the outer disk or surrounding gas envelope.

At that distance, it should take years or centuries for material to spiral closer in to the growing starlet, rather than mere weeks.

A couple of scenarios under investigation could account for this short span.

One possibility is that lumpy filaments of gas funnel from the outer to the central regions of the star, temporarily warming the object as the clumps hit its inner disk. Or, it could be that material occasionally piles up at the inner edge of the disk and casts a shadow on the outer disk.

“Herschel's exquisite sensitivity opens up new possibilities for astronomers to study star formation, and we are very excited to have witnessed short-term variability in Orion protostars,” said Nicolas Billot, an astronomer at the Institut de Radioastronomie Millimétrique (IRAM) in Grenada, Spain who is preparing a paper on the findings along with his colleagues. “Follow-up observations with Herschel will help us identify the physical processes responsible for the variability.”

Herschel is a European Space Agency cornerstone mission, with science instruments provided by consortia of European institutes and with important participation by NASA.

NASA's Herschel Project Office is based at JPL. JPL contributed mission-enabling technology for two of Herschel's three science instruments.

The NASA Herschel Science Center, part of the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena, supports the United States astronomical community. Caltech manages JPL for NASA.

More information is online at http://www.herschel.caltech.edu , http://www.nasa.gov/herschel and http://www.esa.int/SPECIALS/Herschel .

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After years of increases in the rates of childhood obesity, a new UC Davis study shows that the increase slowed from 2003 to 2008 among California school children.

While encouraged by the results, the authors expressed concern about a group of youngsters currently driving the increase in obesity: children under age 10.

“Children who were obese entering the fifth grade remained obese in subsequent years as well, despite improvements in school nutrition and fitness standards,” said William Bommer, professor of cardiovascular medicine at UC Davis and senior author of the study. “And we suspect that this trend begins before kindergarten.”

Published in the February 2012 issue of the American Heart Journal, the results indicate a major turning point in efforts to reduce the impact of a chronic condition linked with a host of serious adult health issues that can begin in childhood, including heart disease, diabetes, breathing issues and some cancers.

Bommer served on a state task force that recommended standards to help protect K-12 children and teens from diseases related to sedentary living and unhealthy eating.

As a result, new laws in 2005 expanded fitness programs, nutrition education and alternatives to high-fat, high-sugar foods and beverages in California schools.

Since 1996, California schools have reported to the state Department of Education the results of a variety of fitness and body composition evaluations for fifth, seventh and ninth graders.

Body composition evaluations included body mass index – or BMI – measures, which determine if a child has a healthy weight or is overweight or obese.

Data on all students from 2003 to 2008 were provided to Bommer to evaluate and gauge the success of the new standards. For the current study, he and his colleagues included data on a total of 6.3 million students for whom complete fitness test results and body composition evaluations were available.

There were some encouraging results.

While childhood obesity is still on the rise – 2 percent more children were overweight and obese in 2008 than in 2003 – the rate of increase is slowing.

National studies in prior decades showed annual increases in obesity among children and teens between 0.8 percent and 1.7 percent each year.

For the current study, the rate of increase in California was an average of 0.33 percent per year.

In addition, while the results of fitness tests varied – abdominal strength and trunk extensor strength worsened overall, while upper body strength and flexibility improved overall – there was a significant increase in the percent of children with healthy aerobic capacity.

“This was particularly heartening, because cardiovascular and respiratory endurance directly correlate with reduced risks of heart disease and diabetes later in life, especially if it is maintained over time,” said Bommer.

One concern, however, was that students with lower aerobic capacity and upper body strength fitness scores and higher BMIs tended to live in counties with lower median household incomes (less than $40,000 per year) or with higher unemployment.

“We clearly need to do more to ensure that children, regardless of where they go to school, are benefiting from the recommended health standards,” said study lead author Melanie Aryana, a UC Davis researcher in cardiovascular medicine. “Expanding efforts to ensure that all California schools have the resources they need to make healthy changes will help.”

The team's strongest recommendation related to reducing the trend toward early onset, persistent obesity among younger school children.

This generation could eventually reverse recent advances in reducing heart disease risks and mortality, according to Bommer. He advises earlier fitness testing, including during preschool, to better monitor this increase together with interventions that specifically address unhealthy weight prior to age 10.

“Our study proves that nutrition and physical activity standards can help fewer children become obese during a critical time in their lives for establishing long-term healthy habits,” said Bommer. “But just imagine how much more we can do to reduce the impact of obesity if we are just as successful much earlier in children's lives.”

In addition to Bommer and Aryana, Zhongmin Li, UC Davis associate professor of internal medicine, was a study coauthor.

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LAKE COUNTY, Calif. – Lake County's senior centers are once again working together to raise money for important nutrition programs for seniors.

Last year Lake County senior centers participated in “March for Meals” to raise funds for their Meals on Wheels programs.

The 2011 March for Meals effort raised more than $30,000, according to a report from the centers.

This year the local senior centers are hoping to exceed that amount so that the vital services they provide that bring independence and hope to homebound seniors can continue.

With many challenges like the rising cost of gasoline and food prices, as well as a growing senior population in need of their services, senior centers are working hard to make up the difference.

Hundreds of volunteers come to the senior centers every day to prepare and serve meals, deliver meals to the homebound, run thrift stores and provide outreach services to the thousands of seniors in the community.

The month of March has been designated to bring awareness to the community of the many services that the centers provide, and give an opportunity for everyone to help.

Each senior center is running its own March for Meals campaign and need the community to help in this effort.

Bringing a sponsorship packet to places of employment, family, church or any other group to help raise money can make a world of difference to the efforts of local senior centers.

Senior centers with meals programs can be contacted at the following phone numbers, or by stopping by Middletown, 707-987-3113; Highlands Senior Center in Clearlake, 707-994-3051; Live Oak Senior Center in Clearlake Oaks, 707-998-1950; Lucerne, 707-274-8779; and Lakeport, 707-263-4218.

More information can be found online at www.lcseniors.com .

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