News
- Health & Medicine
Suicide Watch: Antidepressants get large-scale inspection
Data from the United Kingdom indicate that depressed patients attempt and complete suicides at an elevated rate in the 3 months after starting to take any of four antidepressant drugs.
- Earth
Skin proves poor portal for arsenic in treated wood
Direct contact with old-style pressure-treated lumber should pose little risk that arsenic will penetrate the skin.
- Health & Medicine
New cholesterol guidelines advise more treatment
Citing results from five recent trials of anticholesterol statin drugs, U.S. health officials recommend that physicians use the drugs to treat many more patients with high cholesterol.
- Paleontology
Chipmunks in Wisconsin toughed out ice age
Analyses of DNA from chipmunks in parts of the U.S. Midwest hint that some populations of the creatures stayed in northern refuges rather than migrating south at the beginning of the last ice age.
- Animals
A first for mammals: Tropical hibernating
The fat-tailed lemur, the first tropical mammal documented to hibernate, exploits local heat spikes to save energy during the long snooze.
- Chemistry
Tarantula venom disrupts cells in unexpected way
The unusual way in which the chemical components of tarantula venom disrupt cells could inspire the design of new drug therapies.
- Archaeology
Seeds of agriculture move back in time
Excavations in Israel indicate that people began to eat large quantities of wild grass seeds and wild cereal grains by around 23,000 years ago, which pushes back by 10,000 years the estimated shift to a plant-rich diet.
- Astronomy
Two newly found space molecules
Researchers have detected two new organic chemicals in a large interstellar cloud.
- Animals
Sparrows Cheat on Sleep: Migratory birds are up at night but still stay sharp
During their fall migration season, white-crowned sparrows sleep only about a third as much as they do at other times of the year without becoming slow-witted.
- Health & Medicine
Leukemia Fighter: Drug could combat resistant cases
A new drug for treating chronic myeloid leukemia that is resistant to the frontline drug imatinib shows promise in mouse tests.
- Physics
Feel the Force: Magnetic probe finds lone electron
Scientists have observed a single electron's magnetism.
- Chemistry
Nitrogen Power: New crystal packs a lot of punch
At extremely high temperatures and pressures, nitrogen gas assumes a three-dimensional crystal structure called polymeric nitrogen, a long-sought energy-storage material.
