From bonobos and rats to tickling robots, research is finally cracking the secrets of why we’re ticklish, and what that reveals about our brains ...

Ten years ago, I would have turned my nose up at the idea that we already understood how to get machines to think. In the 2010s, my team at Google Research was working on a wide variety of ...

The theory of evolution by natural selection was first formulated in Darwin’s book “On the Origin of Species” in 1859. It describes how organisms change over time as a result of changes in heritable ...