Zuckerberg testifies before Congress, day 1: start time, live stream, and live blog

In just a few hours, Mark Zuckerberg will testify in the first of two widely anticipated hearings before Congress. The first hearing, scheduled for later today at 2:15PM ET, will take place before a joint session of the Senate Judiciary Committee and the Senate Commerce, Science, and Transportation Committee.
This isn’t the first time Facebook has been forced to testify about the vulnerabilities of its platform before Congress: in October, Facebook, along with Google and Twitter, were ask