'First, the hosts Adam Cole and Joss Fong provide a brief history of Neanderthal discovery, as well as a rundown of how contemporary scientists view the Neanderthals’ place in evolutionary history today. Then, speaking with a series of experts, Cole takes a detailed dive into how, exactly, scientists arrived at the growing consensus that human-Neanderthal interbreeding means that there’s a little bit of Neanderthal in everyone’s family tree.'

https://aeon.co/videos/why-it-took-a-century-to-work-out-that-humans-interbred-with-neanderthals