Sediment DNA also traces life outside the cave. Predators dragged prey into sheltered chambers, humans left waste behind. By following changes in human, animal and microbial DNA over time, researchers ...

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Chimpanzees, along with bonobos, are humans' closest living relatives. In fact, you may have heard that humans and chimps share 98.8% of their DNA. But is this actually true? And what does "similar ...