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UA Mars Camera Reveals Hundreds of Impacts Each Year

By Guest PostMay 21, 2013Sciencealfred mcewen, chelyabinsk, context camera, ctx, hirise imaging experiment, ingrid daubar, leslie tamppari, mars, martian craters, martian surface, martian terrain, mro, NASA, picture, planet, red planet, russia, space rocks, texas, thinner atmosphere, two week cycle, ua mars camera, university of arizona

Taking before and after pictures of Martian terrain, researchers of the UA-led HiRISE imaging experiment have identified almost 250 fresh impact craters on the Red Planet. The results suggest Mars gets pummeled by space rocks less frequently than previously thought, as scientists relied on cratering rates of the moon for their estimates.

Scientists using images from NASA’s Mars Reconnaissance Orbiter, or MRO, have estimated that the planet is bombarded by more than 200 small asteroids or bits of comets per year forming craters at least 12.8 feet (3.9 meters) across.

Researchers have identified 248 new impact sites on parts of the Martian surface in the past decade, using images from the spacecraft to determine when the craters appeared. The 200-per-year planetwide estimate is a calculation based on the number found in a systematic survey of a portion of the planet. (more…)

‘You’re awesome … just get out of your own way!’

By Guest PostMay 20, 2013General, Healthaddiction psychiatrist, awesome tedx, clinical research, judson brewer, mindfulness training, neuroscientist, techniques, yale university, you

In this TEDx talk, Dr. Judson Brewer, an addiction psychiatrist and neuroscientist at Yale University, outlines several common ways that we get in our own way, and details how his clinical research has found that techniques to help us get out of our own way, such as mindfulness training, can have large effects. *Source: Yale […]

Yahoo! to Acquire Tumblr

By Guest PostMay 20, 2013Technologyacquire tumblr, bloggers, ceo, david karp, emea, internet, marissa mayer, media networks, monthly unique visitors, new york city, original media network, personalization technology, search infrastructure, tumblr, Yahoo, yahoo ceo

Promises not to screw it up

SUNNYVALE, Calif. & NEW YORK — Yahoo! Inc. and Tumblr announced today that they have reached a definitive agreement for Yahoo! to acquire Tumblr.

Per the agreement and our promise not to screw it up, Tumblr will be independently operated as a separate business. David Karp will remain CEO. The product, service and brand will continue to be defined and developed separately with the same Tumblr irreverence, wit, and commitment to empower creators. (more…)

Injectable Nano-Network Controls Blood Sugar in Diabetics for Days at a Time

By Guest PostMay 20, 2013Sciencealginate, blood sugar, blood sugar levels, bloodstream, chitosan, closed loop system, daniel anderson, dextran, diabetes patients, diabetes treatment, gluconic acid, glucose, glucose oxidase enzymes, hormone, injectable nano network, injection, insulin, massachusetts institute, material, nanoparticle cores, nanoscale particles, network, north Carolina, robert langer, seaweed, shrimp shells, state university, Technology, type 1 diabetes, unc chapel, zhen gu

In a promising development for diabetes treatment, researchers have developed a network of nanoscale particles that can be injected into the body and release insulin when blood-sugar levels rise, maintaining normal blood sugar levels for more than a week in animal-based laboratory tests. The work was done by researchers at North Carolina State University, the University of North Carolina at Chapel Hill, the Massachusetts Institute of Technology and Children’s Hospital Boston.

“We’ve created a ‘smart’ system that is injected into the body and responds to changes in blood sugar by releasing insulin, effectively controlling blood-sugar levels,” says Dr. Zhen Gu, lead author of a paper describing the work and an assistant professor in the joint biomedical engineering program at NC State and UNC Chapel Hill. “We’ve tested the technology in mice, and one injection was able to maintain blood sugar levels in the normal range for up to 10 days.” (more…)

Global health policy fails to address burden of disease on men

By Guest PostMay 20, 2013General, Healthaids, alcohol use, burden of disease, cerebrovascular disease, chris murray, davidson gwatkin, decline, economic situation, gender inequalities, gender norms, global health policy, global mortality rates, hiv, ischemic heart disease, kent buse, lancet, life expectancy, lower respiratory infections, men, policy makers, sarah hawkes, tobacco smoking, unaids, university of washington, unprotected sex, unsafe sex, women

Men experience a higher burden of disease and lower life expectancy than women, but policies focusing on the health needs of men are notably absent from the strategies of global health organisations, according to a Viewpoint article in this week’s Lancet.

The article reinterprets data from the ‘Global Burden of Disease: 2010’ study which shows that all of the top ten causes of premature death and disability, and the top ten behavioural risk factors driving rates of ill-health around the world, affect men more than they affect women. (more…)

Galaxy’s Ring of Fire

By Guest PostMay 19, 2013Scienceastronomers, Galaxy, gas, johnny cash, messier 94, NASA, optical illusion, ring of fire, spiral arms, spitzer space telescope, star formation, starburst ring

Johnny Cash may have preferred this galaxy’s burning ring of fire to the one he sang about falling into in his popular song. The “starburst ring” seen at center in red and yellow hues is not the product of love, as in the song, but is instead a frenetic region of star formation.

The galaxy, a spiral beauty called Messier 94, is located about 17 million light-years away. In this image from NASA’s Spitzer Space Telescope, infrared light is represented in different colors, with blue having the shortest wavelengths and red, the longest. (more…)

‘Dark Oxidants’ Form Away from Sunlight in Lake and Ocean Depths, Underground Soils

By Guest PostMay 19, 2013Environmentamounts of superoxide, antioxidants, away from sunlight, bacteria, beneath the seafloor, bettina voelker, blueberries, breathing oxygen, cancer, cells, chantal mendes, chemistry of oceans, colleen hansel, dark chocolate, dark environments, dark oxidants, dark places, death in microorganisms, deborah bronk, environmental oxidants, harvard university, hazardous, Health, hole, humans, julia diaz, lake, national science foundation, neurotoxin mercury, nsf, ocean depths, oceanographic institution, oxidants, peter andeer, premature aging, san francisco, source of superoxide, tong zhang, toxic chemicals, underground soils, woods

New findings overturn understanding of light-dependent environmental oxidants

Breathing oxygen… can be hazardous to your health?

Indeed, our bodies aren’t perfect. They make mistakes, among them producing toxic chemicals, called oxidants, in cells. We fight these oxidants naturally, and by eating foods rich in antioxidants such as blueberries and dark chocolate.

All forms of life that breathe oxygen—even ones that can’t be seen with the naked eye, such as bacteria—must fight oxidants to live. (more…)

Teen girls less successful than boys at quitting meth in UCLA pilot research study

By Guest PostMay 19, 2013Healthaddiction, behavioral health services, boys, bupropion, felipe rodriguez, henry van oudheusden, ineffective treatment, james mccracken, janette gadzhyan, keith heinzerling, less successful, pilot research study, placebo pills, quitting meth, steven shoptaw, teen girls, ucla

A UCLA-led study of adolescents receiving treatment for methamphetamine dependence has found that girls are more likely to continue using the drug during treatment than boys, suggesting that new approaches are needed for treating meth abuse among teen girls.

Results from the study, conducted by the UCLA Center for Behavioral and Addiction Medicine and the community-based substance abuse treatment program Behavioral Health Services Inc., are published in the April edition of the Journal of Adolescent Health. (more…)

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