Thin stretches of the human X chromosome look oddly empty when you scan for Neanderthal DNA. Geneticists even have a name for the gaps: “Neanderthal deserts.

Purdue often talks about its family-like culture. There may not be a better example of that than Zach Edey's gesture to Gene Keady during Tuesday's game. WEST LAFAYETTE, Ind. — Purdue often talks ...

Fragments of DNA from long-extinct human relatives still circulate in modern genomes, and in some cases they do more than linger. They actively shape how people survive in extreme environments. The ...