Science News Magazine:Vol. 172 No. #4
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More Stories from the July 28, 2007 issue
Antidepressants trim suicide tries
Treating depression with antidepressant drugs reduces the risk of suicide.By Bruce Bower
Old viruses have new tricks
Invading viruses can trick a cell into turning off its defense mechanisms.
Erosion accelerates along Alaskan coast
Alaska's northern coast is falling into the sea at an accelerating rate.By Sid Perkins
Saturn’s retinue: 60 and counting
A little moon, two kilometers across, is Saturn's 60th satellite.By Ron Cowen
Health & Medicine
Perception is longevity
Mice lived longer when they were fooled into sensing lower insulin levels than they actually had.
Universities seek armchair astronomers
Scientists are recruiting online help from the public to classify the shapes of 1 million galaxies in never-before-viewed photographs.By Janet Raloff
Weighting for Friends: Obesity spreads in social networks
Obesity spreads as a social contagion through networks of friends and relatives, apparently because associating with overweight people encourages a laxer attitude toward weight gain.By Bruce Bower
Health & Medicine
Good Light: Sun early in life could protect against MS
Childhood exposure to direct sunshine may protect people against developing multiple sclerosis later.By Nathan Seppa
Stunting Growth: Ozone will trim plants’ carbon-storing power
Increasing ground-level ozone due to pollution will stifle the growth of vegetation in many regions, accelerating the buildup of planet-warming carbon dioxide in the atmosphere.By Sid Perkins
Sop Story: New porous gel soaks up heavy metal
A new porous gel efficiently removes mercury from contaminated water and may also have the ability to catalyze chemical reactions such as those that generate hydrogen for fuel.
Health & Medicine
Grim Reap Purr: Nursing home feline senses the end
A nursing home cat in Rhode Island knows when the end is nigh, predicting with uncanny accuracy when residents will die.By Brian Vastag
Sweet Gatekeeper: Receptor depends on sugar and water
Water and sugar molecules play a previously unsuspected role in the way that a ubiquitous receptor passes chemical messages between cells.
Heavenly Chemistry: Astronomers announce astrophysical anion
Astronomers' discovery of a rare negatively charged organic molecule sheds light on conditions in interstellar gas clouds, where amino acids, sugars, and other prebiologic compounds form.By Ron Cowen
Oil poured into a pan of the same liquid drags along a surrounding air layer, which can make it skip in and out of the surface before it mixes in.
Not-So-Elementary Bee Mystery
Old-style epidemiology casework combines with an array of 21st-century lab tests in the search for clues to the disappearance of honeybees.By Susan Milius
Computer simulations of blood flow in the heart allow doctors to test surgical innovations before trying them on patients.
Letters from the July 28, 2007, issue of Science News
Gyro Q & A Doesn’t “Spinning into Control” (SN: 05/19/07, p. 312) on flywheels leave out a significant aspect: the gyroscope effects of a rotating large mass? Wouldn’t it be a benefit for moving installations (stabilization) and a problem for immobile installations? Lee HukillPalo Alto, Calif. In the article, the flywheels depicted appear to have […]By Science News