By Penelope Green Karen Pryor once taught a hermit crab to ring a bell by pulling a string with its claw. She taught a cat to play the piano (ham was involved) and, most impressive, her mother to ...

Karen Tumulty is an associate editor and columnist for The Post. In her previous role as a national political correspondent for the newspaper, she received the Toner Prize for Excellence in ...

Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across ...

U.S. President Donald Trump's administration is considering tightening restrictions on artificial intelligence leader Nvidia's sales of its H20 chips designed for the China market, three people ...