Uncategorized
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Old viruses have new tricks
Invading viruses can trick a cell into turning off its defense mechanisms.
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Antidepressants trim suicide tries
Treating depression with antidepressant drugs reduces the risk of suicide.
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19861
I was surprised to find no mention in this article of the possibility that the decline in suicide attempts might be owed merely to the hope generated by beginning a treatment, rather than the treatment itself. I have known depression sufferers to be nearly euphoric after starting a new treatment. Karen AikenSan Francisco, Calif.
- Computing
Virtual Surgery
Computer simulations of blood flow in the heart allow doctors to test surgical innovations before trying them on patients.
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19860
In this article the researchers postulate six reasons for the collapse of the bee colonies. The reason, in my opinion, is evident when considering the extensive use of insecticides throughout the world. Wally McMillanPalo Alto, Calif.
- Animals
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.
- Humans
From the July 17, 1937, issue
Tung trees from China make their mark in the southeastern United States, early concerns about oil shortages, and a suggestion that telescopes might already be seeing almost to the edge of the universe.
- Health & Medicine
Phytochemical Beauty
Our Food For Thought column recently published two offerings on health-related findings about genistein, a soybean constituent. Ever wonder what that chemical looks like? Or how about capsaicin—the spicy agent in hot chilies being explored as a painkiller, lycopene—the red pigment in watermelons that may protect our skin against harmful ultraviolet rays, or sulforaphane—a trace […]
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Chemical Conversation: Red blood cells send a signal that makes platelets less sticky
Red blood cells can send a chemical signal that makes platelets less sticky, easing blood flow through narrow vessels.
- Health & Medicine
Brain Seasoning: A common spice could deter Alzheimer’s
A compound in the curry spice turmeric restores the ability of immune system cells to destroy plaques linked to Alzheimer's disease.
- Animals
Den Mothers: Bears shift dens as ice deteriorates
As Arctic ice has dwindled, pregnant polar bears in northern Alaska have become more likely to dig their birthing dens on land or nearshore ice than on floating masses of sea ice.
- Computing
Check on Checkers: In perfect game, there’s no winner
Thanks to an immense calculation that worked out every possible game position, computers can now play a flawless game of checkers and force a draw every time.
