News
- Earth
Haze clears on sooty climate conditions
The results of a new study suggest that soot plays a bigger role in regional climate changes than scientists had previously realized.
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Chicken Rank: Hen social position shifts egg hormones
A study of leghorn chickens has linked hormone concentrations in a hen's eggs to her rank in the pecking order.
- Health & Medicine
Making Bone: Novel form of vitamin D builds up rat skeleton
A newly synthesized form of Vitamin D induces bone-making cells to capture calcium and fortify bone mass in rats, suggesting it might work against osteoporosis in people.
- Humans
Nobel prizes honor innovative approaches
The 2002 Nobel prizes pay tribute to an international sampling of scientists who developed powerful new techniques for expanding the horizons of research.
