November 25, 2009, 11:59 a.m.
by Simon Schmid
How a German condom brand is using solar-powered cookers in South India to make green condoms.
What looks like a terrifying hole to the underworld is much more benign.
A central Texas getaway lures daredevils and those simply wanting to cool off.
Antarctica is oddly barren of iron-based meteorites. What could have happened to them?
2 waterfalls send half of a river on its way to Lake Superior. Where did the other half go?
Scientists are baffled at this seemingly altruistic behavior.