Uncategorized
- Earth
Age and gender affect soot’s toxic impact
Except in young females, small blood vessels in rodents lost the ability to precisely regulate blood flow after exposure to an oily constituent of diesel soot.
- Health & Medicine
Right combination of malaria drugs?
Children in Uganda who contract malaria recover faster with a drug based on artemisinin, derived from Chinese wormwood, than with a longstanding medical remedy.
- Health & Medicine
Nutrients linked to brain lesions
The more calcium and vitamin D elderly individuals consume, the greater the number and size of lesions that show up in their brains.
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Mental letdown for antipsychotic meds
People with chronic schizophrenia get surprisingly modest improvements in memory and learning from new as well as old antipsychotic medications.
- Earth
Wildfire, Walleyes, and Wine
An international panel's latest report on the impacts of climate change highlights an overlooked need: preparing for droughts, floods, heat waves, and other disasters.
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19843
Your article states, “Exercise, estrogen, [and more examples] all rev up production of new brain cells.” I am compelled to ask: If estrogen leads to neurogenesis, does the “male” hormone testosterone also? Jaime HunterMesquite, Texas There’s good evidence that testosterone increases neurogenesis in songbirds but little evidence that it does the same in mammals. —B. […]
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Brain Gain
The brain constantly sprouts new neurons, a recently discovered phenomenon that neuroscientists and drugmakers are working to understand and harness.
- Humans
Letters from the June 16, 2007, issue of Science News
Bigger picture Reading “Pictures Posing Questions: The next steps in photography could blur reality” (SN: 4/7/07, p. 216), I was struck by the similarity between the image that used a cone-shaped mirror and the images you get from gravitational lensing. As the same data are available in both types of images, it ought to be […]
- Humans
From the June 5, 1937, issue
All lit up in Paris, changing elements, and cheap, accurate lenses.
- Humans
Scitopia.org
This new site is a search portal to the digital libraries of leading science and technology societies. Enter a term into its search engine to find authoritative research, patents, and government documents. Go to: http://www.scitopia.org
- Math
Musical Illusions
An auditory phenomenon that resembles a familiar optical illusion sheds light on how our brains process sound.
- Earth
Storm Norms: Caribbean corals and sediments yield clues to hurricane frequency
The recent increase in hurricane activity in the North Atlantic, a phenomenon that some scientists blame on climate change, actually reflects a return to normal after a lull in the 1970s and 1980s.
