News
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Body clock affects racing prowess
When it comes to athletic performance, we're all night owls, a new study suggests.
- Archaeology
Spicy finds from before Columbus
Ancient Americans cultivated and ate chili peppers at least 6,100 years ago, setting the stage for the spicy condiment to spread throughout the world after Columbus' voyages to the New World.
- Earth
DNA pinpoints poached ivory tusks
Scientists tracked the origin of an illegal ivory shipment to Zambia by using an improved DNA-analysis technique to study the confiscated tusks.
- Planetary Science
A crack at life
New images of ancient cracks on Mars suggest that liquid may have percolated through underground rock on the Red Planet, providing a possible habitat for primitive life.
