This evening, a "leap second" threatens to wreak havoc across the Internet.
The extra second will take place at 8 p.m. ET on Tuesday so that we can sync up our watches with the Earth's slowing rotation. But the 61-second minute threatens to make computer systems go haywire, potentially crashing websites and screwing up the software that powers the world's financial markets.
Will the Leap Second break the Internet at 8 p.m.? - Jun. 30, 2015