News
- Planetary Science
Martian leaks: Hints of present-day water
In some of the coldest regions on Mars, water appears to have recently gushed from just beneath the surface, running down crater walls and steep valleys.
-
Human Genome Work Reaches Milestone
Two rival groups jointly announced that each has read essentially all of the 3 billion or so letters that spell out the human genome, the genetic information encoded with the 6 feet of DNA coiled up in every human cell.
- Health & Medicine
Blood-Clot Surprise: Finding might explain a danger of Viagra
An amendment to the blood-clotting pathway might link Viagra to heart attacks in some users.
