We've seen how much wild cats love the iPad, but now the great apes are getting in on the fun as well. Orangutans in captivity will be using the iPad to video-chat with other orangutans in other zoos. Read more 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.