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TechMuck Tech: Natural enzyme displaces precious metal in fuel cell
A prototype fuel cell uses an enzyme from a soil microbe to generate electricity from hydrogen rather than from rare and expensive metal catalysts such as platinum.
By Peter Weiss -
EarthBreaking Waves: Mangroves shielded parts of coast from tsunami
Along a strip of India's southeastern coastline, trees protected certain villages from last December's tsunami, while waves wiped out neighboring settlements that weren't sheltered by vegetation.
By Ben Harder -
PaleontologyCaribbean Extinctions: Climate change probably wasn’t the culprit
Remains of extinct sloths unearthed in Cuba and Haiti indicate that the creatures persisted in Caribbean enclaves until about 4,200 years ago, a finding that almost absolves climate change following the last ice age as a cause for the die-offs.