Top stories: Life after dinosaurs, Neanderthal planning, and Russia’s CRISPR babies

Science | AAAS | 10/25/2019 | Staff
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When Ian Miller and Tyler Lyson visited Corral Bluffs, a fossil site 100 kilometers south of the Denver Museum of Nature & Science, Lyson was not impressed by the few vertebrate fossils he saw. But on a return trip, he split open small boulders called concretions—and found dozens of skulls. Now, he, Miller, and colleagues have combined the site's trove of plant and animal fossils with a detailed chronology of the rock layers to tell a momentous story: how life recovered from the asteroid impact that killed off the dinosaurs 66 million years ago.

Old-school scholars considered Neanderthals brutish and simple, but recent research shows they made jewelry, had a precision grip, and may have even painted cave art. Now, a tar-caked tool found on a beach in the Netherlands supports the idea that Neanderthals could accomplish complex, multistep tasks that took planning ahead over several days.

Scientist - Embryos - Answer - Researchers - Safety

How does a scientist responsibly edit human embryos? The answer, according to most researchers, is that you don’t—at least, not until massive safety and ethical hurdles are...
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