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Science

NASA is bringing rocks back from Mars, but what if those samples contain alien life?

NASA is bringing rocks back from Mars, but what if those samples contain alien life?

NASA and the European Space Agency are gearing up to bring home a pristine sample of Martian rock. But given the small chance of life on the red planet, they have to grapple with safety questions.
by Nell Greenfieldboyce

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NASA advisers call for a visit to Uranus, plus more science during moon landings

NASA advisers call for a visit to Uranus, plus more science during moon landings

NASA should send probes to the ice giant planet of Uranus and to a moon of Saturn where conditions could be right for life. Those are some of the recommendations in a new report to the space agency.
by Nell Greenfieldboyce

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Study: There's still a way to reach global goal on climate change

Study: There's still a way to reach global goal on climate change

A new study finds that if the nations of the world live up to their promises, future climate change can be kept to within an international goal set by scientists. But it won't be the safest international goal.
by The Associated Press

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Scans reveal the brain's early growth, late decline and surprising variability

Scans reveal the brain's early growth, late decline and surprising variability

A study of more than 120,000 brain scans shows rapid growth before age 2 and accelerating decline after age 50. The results may one day help pick up abnormalities in the developing brain.
by Jon Hamilton

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