After the space shuttle Columbia broke up on re-entry, astronauts on the ISS inspect every visiting space shuttle for damage. Shuttles do a backflip as ISS residents take pictures, looking for chips in the heat shield. The shuttle astronauts carry cameras, too, and they’ve snapped some beautiful shots of the station over the years.
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.