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Science

Drawing a line in the mud: Scientists debate when 'age of humans' began

Drawing a line in the mud: Scientists debate when 'age of humans' began

Scientists on five continents are hunting for geological evidence to pinpoint exactly when humans became a major force shaping life on Earth. But settling on the date could unleash a larger debate.
by Rebecca Hersher

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CRISPR scientist's biography explores ethics of rewriting the code of life

CRISPR scientist's biography explores ethics of rewriting the code of life

“The Code Breaker” profiles Jennifer Doudna, a Nobel Prize-winning biochemist key to the development of CRISPR, and examines the technology's exciting possibilities and need for oversight.
by Terry Gross

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Why cuttlefish are smarter than we thought

Why cuttlefish are smarter than we thought

By being able to wait for better food during an experiment, cuttlefish — the squishy sea creatures similar to octopuses and squids — showed self-control that's linked to the higher intelligence of primates.
by James Doubek

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In first test drive on Mars, Perseverance rover makes a short but significant trip

In first test drive on Mars, Perseverance rover makes a short but significant trip

The NASA rover traversed some 21 feet of terrain this week, in its first test drive since landing on the red planet. It also captured photos of its touchdown site and the wheel tracks it left behind.
by Rachel Treisman

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