YouTube science vlogger Tom Scott fills us in on an interesting optical illusory phenomenon known as the McCollough effect while visiting the Walt Disney World.

The actress named by Esquire as the "sexiest woman alive" is at the centerstage of a heated debate over the Israeli-Palestinian conflict on Twitter this week, following the recent announcement of her celebrity endorsement deal with an Israeli startup company that runs one of its factories in the disputed territory of the West Bank.

PBS Idea Channel explores whether behaviors referred to as "trolling" are actually harmful or helpful.

Alyssa Milano was inspired to help create the newly released comic, Hacktivist, by Anonymous.