Scientist Adam Steltzner worries about whether the Mars rover landing equipment he helped design will work. But in his garden, where he approaches things like the engineer he is, he is firmly in charge.
By Rebecca Davis
The depths of our oceans are dark, punishingly cold, and utterly devoid of life. Or so scientists thought, until a team of researchers in the late 1970s stumbled upon squishy, rubbery worms, up to 7 feet long, living 8,000 feet below the surface of the Pacific.
The hits and the highlights from WGBH
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