One of the most spectacular ways to watch a Shuttle launch (if you're not there in person) is from the video cameras mounted on the booster rockets as it goes up, and then as they fall off and splash down. NASA has just released the footage from the final Shuttle launch ever. Watch it below.
See our full coverage of the last launch here.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.