They were our physical and intellectual equals. What's the difference? The label "Neanderthal" becomes a kind of historical racism against a group of true human beings.
It's not just horizontal gene transfer that can obscure evolutionary history. Scientists have found bacteria recycling fragmented DNA from long-dead organisms. The impact on evolutionary theory could be substantial.
Here are more stories about animals, plants and cells attracting scientists with their astonishing capabilities, proving that biomimetics is one of the hottest trends in science.