News
- Agriculture
Web Special: You fertilized with what?
A study shows that farmers can substitute human urine for conventional fertilizer.
- Anthropology
Sail Away: Tools reveal extent of ancient Polynesian trips
Rock from Hawaii was fashioned into a stone tool found in Polynesian islands more than 4,000 kilometers to the south, indicating that canoeists made the sea journey around 1,000 years ago.
- Health & Medicine
Lack of Evidence: Vaccine additive not linked to developmental problems
Thimerosal, a mercury-containing vaccine preservative, shows no signs of causing memory, attention or other problems in children.
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Bugs in Space: Genes explain why salmonella grow deadlier when freed from Earth’s gravity
Bacteria that flew on a space shuttle became deadlier than their earthbound counterparts.
