Facebook’s Hack

Astronaut Chris Hadfield at TED, Casey Neistat surfs in J. Crew, the origins of Matthew Dear and more in our weekly look at the web

This week, Facebook publicly revealed a new language, called Hack, which three of its engineers have been building for the past few years to improve the efficiency of their fellow developers—and that Facebook has been already using to run its website. While many suggest Hack is simply an updated version of PHP, its importance lies in the fact that it allows coders to use both dynamic as well as static typing (known as gradual typing), meaning they can be more precise while also working quickly. Hack is available as open-source software, so the entire world can take their turn at improving it.