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Life & Evolution

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group of killer whales

MOVING ON  If traveling killer whales have a postmenopausal female in the lead, her long ecological experience may give them an edge in hunting salmon. 

San Antonio de los Cobres, Argentina

The village of San Antonio de los Cobres is high in the Argentinian Andes. The groundwater is contaminated with arsenic, and the people local to the region may have adaptations to its poisonous presence.

forest tent caterpillar

Forest tent caterpillars, like this one resting on an aspen leaf, are found in U.S. hardwood forests. A new study finds that when carbon dioxide levels are higher, herbivorous insects eat more vegetation. 

Life & Evolution

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