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Earth

Tiny Bubbles: Oldest evidence yet for methane makers

Analyses of the gases dissolved in water trapped in ancient minerals suggest that methane-generating microbes have been around almost 3.5 billion years.

Humans

Letters from the March 25, 2006, issue of Science News

Bee movie? In the article about using harmonic reflected signals to track bees (“The Trouble with Chasing a Bee,” SN: 1/14/06, p. 23), I thought it was interesting to note that the original technology was created by the Russians as a spy device. The technology is still being used for a form of spying. Dwight […]

Animals

That’s One Weird Tooth

The narwhal's distinctive spiral tusk has structures that could make it phenomenally sensitive, raising new questions about its functions.