Remember playing Tetris? Originally developed in 1984, the video game in which blocks of various shapes rain down and the player needs to find a way to fit them together is now ubiquitous. This TED ED video compares Tetris blocks to carbon dioxide being released into the atmosphere and reabsorbed by plants and ecosystems as a part of the carbon cycle. But what happens when you can't keep up with the falling blocks? Watch the video to learn how carbon dioxide emissions are heating up Earth. Explore the lesson that goes along with this video on the TED ED site.