Every year, students at MIT pull a prank to show their engineering prowess. This weekend, they achieved what previous classes have only dreamed about: They turned Building 54 into a giant Tetris game. I saw it myself driving along the Charles River Saturday night. The building is tall and narrow with lots of little windows all in a perfect grid. Usually the windows are dark in the evening. But Saturday night, those windows were lit up in all different colors. I had to look twice, but yes, the lights were moving from top to bottom. What was going on? Then one of the kids in the car yelled, "It's Tetris." Of course it was. And the next words out of my mouth were, "It must be a hack!" Indeed. See the video below and read more about it here.

Credit: Erik Nygren / MIT