The first Grand Award we gave out in the Aviation category went to the most iconic warplane in a generation. The Northrop-Grumman-built B-2 can fly inside enemy lines without any radar detection, has a range of 6,000 nautical miles, and can carry payloads up to 20 tons. The hull is fashioned from a composite that absorbs radio waves, and its curved edges also help deflect signals, so they won’t return to their source. There are still 20 B-2s in the Air Force’s fleet.
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.