In the 1950s, the Finnish biologist Björn Kurtén noticed something unusual in the fossilized horses he was studying. When he compared the shapes of the bones of species separated by only a few generations, he could detect lots of small but significant changes. Horse species separated by millions of…

On Friday, Treasury Secretary Steve Mnuchin said he’s “ not worried at all ” about artificial intelligence replacing human workers because it's “50-100 more years” off. In reality, data shows this is already happening — with an estimated 38 percent of existing U.S. jobs at risk of being turned over…

SpaceX and Tesla CEO Elon Musk is backing a brain-computer interface venture called Neuralink, according to The Wall Street Journal . The company, which is still in the earliest stages of existence and has no public presence whatsoever, is centered on creating devices that can be implanted in the…

Ming Yeung / Getty Yuval Noah Harari’s first book, Sapiens , was an international sensation. The Israeli historian’s mind-bending tour through the triumph of Homo sapiens is a favorite of, among others, Bill Gates, Mark Zuckerberg, and Barack Obama. His new book, Homo Deus: a Brief History of…