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To better understand what drives biological diversity on Earth, scientists have historically looked at genetic differences between species. But this only provides part of the picture.

In her new book, UC Santa Cruz biologist Beth Shapiro argues that while gene-editing technology is giving humans remarkable new powers, we have been manipulating other species for as long as we have existed.

Easter Island’s famous megaliths have relatives on islands thousands of miles to the north and west, and so did the people who created them, a study has found.