This photo, entitled "David and Goliath," was taken by scientist and photographer Octavio Aburto in Cabo Pulmo, Mexico, where the Sea of Cortez mixes with the Pacific Ocean. This "tornado" of jackfish is all natural, no manipulation necessary. Read more about it (and see video) 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.