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Earth

Greenland crater renewed the debate over an ancient climate mystery

Scientists disagree on what a possible crater found under Greenland’s ice means for the Younger Dryas impact hypothesis.

Animals

Humans wiped out mosquitoes (in one small lab test)

An early lab test of exterminating a much-hated mosquito raises hopes, but is it really such a great idea?

Health & Medicine

Drinking studies muddied the waters around the safety of alcohol use

Studies claiming that alcohol in even small amounts is dangerous weren’t designed to address risks of moderate drinking.

Planetary Science

A buried lake on Mars excited and baffled scientists

Planetary scientists are still trying to explain how a lake could have formed beneath a kilometer and a half of Martian ice.