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Enduring misconception: Why are we still drawing evolution as a straight line?

Evolution has no final endpoint in mind ...
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Three bird species in one? Inside a warbler’s puzzling DNA

A Pennsylvania birder spotted the bird of a lifetime in his backyard this past spring—it was a hybrid of three ...
Astronaut working on Mars

Genetically modified astronauts? Why humans may need to be redesigned for deep-space missions

NASA is now preparing for a human mission to Mars, but if our descendants ever shrug off their terrestrial bonds, ...
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