A tiny spacecraft measuring less than a foot in length is the first designed to end its own life by using a solar sail as an orbital brake. Putting itself through the fiery atmospheric plunge would let it avoid becoming part of the growing cloud of space debris surrounding Earth, New Scientist. You seeing this, DARPA?
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.