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Topic: University of California at San Diego

NASA ICESAT Satellites use laser to map Greenland, Antarctica Ice Loss over 16 years

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Using the most advanced Earth-observing laser instrument NASA has ever flown in space, scientists have made precise, detailed measurements of how the elevation of the Greenland and Antarctic ice sheets have changed over 16 years.

The results provide insights into how the polar ice sheets are changing, demonstrating definitively that small gains of ice in East Antarctica are dwarfed by massive losses in West Antarctica.

The Kangerdlugssup (pictured) and Jakobshavn glaciers in Greenland have lost roughly 14 to 20 feet (4 to 6 meters) of elevation per year over the past 16 years. (NASA/Jim Yungel)

The Kangerdlugssup (pictured) and Jakobshavn glaciers in Greenland have lost roughly 14 to 20 feet (4 to 6 meters) of elevation per year over the past 16 years. (NASA/Jim Yungel)

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American Heart Association suggests Food system improvements could make it easier to eat healthier

 

American Heart AssociationDallas, TX – An American Heart Association science advisory describes system-wide innovations to the U.S. food system that are sustainable and have the potential to make it easier for consumers to choose healthy foods.

The advisory is published in the American Heart Association journal Circulation.

Innovations in producing, processing, distributing, marketing and preparing food are needed to help Americans eat healthier. (American Heart Association)

Innovations in producing, processing, distributing, marketing and preparing food are needed to help Americans eat healthier. (American Heart Association)

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AAA says Taking Multiple Medications Can Increase Crash Risk for Older Drivers

 

AAA

AAAWashington, D.C. – Nearly 50 percent of older adults report using seven or more medications while remaining active drivers, according to new research from the AAA Foundation for Traffic Safety.

An evaluation of the medications people are taking found that nearly 20 percent of older drivers are using medications that generally should be avoided because they have very limited therapeutic benefit, pose excess harm, or both. Drugs like these are called potentially inappropriate medications, or PIMs1.

50% of older adults report using seven or more medications. (AAA)

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NASA reports new study shows Star’s dimming episodes due to Clouds of Gas and Dust

 

Written by Francis Reddy
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – A team of U.S. astronomers studying the star RZ Piscium has found evidence suggesting its strange, unpredictable dimming episodes may be caused by vast orbiting clouds of gas and dust, the remains of one or more destroyed planets.

“Our observations show there are massive blobs of dust and gas that occasionally block the star’s light and are probably spiraling into it,” said Kristina Punzi, a doctoral student at the Rochester Institute of Technology (RIT) in New York and lead author of a paper describing the findings. “Although there could be other explanations, we suggest this material may have been produced by the break-up of massive orbiting bodies near the star.”

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Heart failure in Methamphetamine Users: Could this be the next epidemic among Vets?

 

American Heart AssociationAnaheim, CAHeart failure associated with methamphetamine (meth) use has risen dramatically in recent years among U.S. veterans, according to preliminary research presented at the American Heart Association’s Scientific Sessions 2017, a premier global exchange of the latest advances in cardiovascular science for researchers and clinicians.

Heart failure associated with methamphetamine use is on the rise among U.S. veterans. (American Heart Association)

Heart failure associated with methamphetamine use is on the rise among U.S. veterans. (American Heart Association)

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NASA reports TRAPPIST-1 is nearly twice as Old as our Solar System

 

Written by Elizabeth Landau
NASA Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age of its star. Young stars have frequent releases of high-energy radiation called flares that can zap their planets’ surfaces.

If the planets are newly formed, their orbits may also be unstable. On the other hand, planets orbiting older stars have survived the spate of youthful flares, but have also been exposed to the ravages of stellar radiation for a longer period of time.

This illustration shows what the TRAPPIST-1 system might look like from a vantage point near planet TRAPPIST-1f (at right). (NASA/JPL-Caltech)

This illustration shows what the TRAPPIST-1 system might look like from a vantage point near planet TRAPPIST-1f (at right). (NASA/JPL-Caltech)

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NASA Techs work to make Bulk Metallic Glass Gears for Robots

 

Written by Andrew Good
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Throw a baseball, and you might say it’s all in the wrist.

For robots, it’s all in the gears.

Gears are essential for precision robotics. They allow limbs to turn smoothly and stop on command; low-quality gears cause limbs to jerk or shake. If you’re designing a robot to scoop samples or grip a ledge, the kind of gears you’ll need won’t come from a hardware store.

At NASA’s Jet Propulsion Laboratory in Pasadena, California, technologist Douglas Hofmann and his collaborators are building a better gear.

Bulk metallic glass, a metal alloy, doesn't get brittle in extreme cold. That makes the material perfect for robotics operated in space or on icy planets. (NASA/JPL-Caltech)

Bulk metallic glass, a metal alloy, doesn’t get brittle in extreme cold. That makes the material perfect for robotics operated in space or on icy planets. (NASA/JPL-Caltech)

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American Heart Association says ‘Nancy’ cartoonist uses personal story to highlight Stroke Awareness

 

American Heart Association

American Heart AssociationDallas, TX – A few years before starting the “Muppets” comic strip for Jim Henson, and long before becoming lead artist of “Nancy,” Guy Gilchrist had a stroke.

On Saturday, World Stroke Day, the cartoonist is teaming up with the American Heart Association/American Stroke Association to bring awareness to the disease that changed the course of his life and career.

NANCY copyright 2016 Guy Gilchrist. Reprinted by permission of UNIVERSAL UCLICK for UFS. All rights reserved.

NANCY copyright 2016 Guy Gilchrist. Reprinted by permission of UNIVERSAL UCLICK for UFS. All rights reserved.

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