Uncategorized
- Earth
No-drive experiment curbs air pollution in Beijing
Traffic-control measures can significantly reduce urban air pollution, a field study in Beijing this past summer indicates.
- Humans
An earlier thaw can trim winter logging
In New Hampshire, the trend toward earlier spring thaws has significantly lowered logging revenues.
- Paleontology
Struck from above
Evidence of an extraterrestrial object striking Earth at the height of the last ice age comes from micrometeorites embedded in the tusks of creatures that were grazing the Alaskan tundra when the object burst in the air above.
-
19914
Your article suggested yet a second possibility leading to the decline or extinction of the mammoths in the region of the apparent iron micrometeorite-shower impact, which drove the metallic particles into the sides of the fossil tusks examined. That same shower of high-velocity metallic particles found in the tusks probably perforated the skin and soft […]
- Health & Medicine
Keeping metabolic syndrome at bay
Chromium supplements reduced some of the unhealthy effects of a sedentary lifestyle in rats.
-
Milking performance from damaged brains
A compound found in milk can mitigate damage to people's brains caused by stroke or diseases such as Alzheimer's.
- Earth
Smog’s heavy impacts
Being overweight increases the risk that people will develop breathing difficulties after encountering smoggy air.
- Physics
Tiptoe acrobats get it just right
Physicists have found that a water-skating insect leaps off the water surface by applying just the right amount of force. With video.
-
19913
There is little mystery why some female fishing spiders are so aggressive that they eat their suitors before mating can take place. It would take a very bold male to court a female knowing he is going to be lunch. To maintain such inherited aggressive behavior in the female, one only has to assume that […]
- Animals
Not So Spineless
Looking for personalities in animals, even among spiders and insects, could add new twists to ideas about evolution and explain some odd animal behavior.
-
19912
As I read this article, I was wondering whether the findings discussed suggest that a woman who has had both a hysterectomy and an oophorectomy should be on estrogen hormone therapy. Does a woman with no uterus or ovaries produce enough estrogen in other organs to benefit from the estrogen receptor beta? Cathy GregorAlexandria, Va. […]
- Health & Medicine
A Different Side of Estrogen
Understanding estrogen's function is complicated by the fact that it can bind to two distinct receptors; scientists studying the second receptor now think that drugs targeting it could help a wide variety of ailments.
