Amazon announced yet another perk for those who've taken the plunge into Amazon Prime today: The Kindle Owner's Lending Library. Regular library ebooks have only recently become available on Kindle, and they've long been kind of a pain to import, so this seems to be Amazon's own version of a library. Prime members who are also Kindle owners can download one book a month, for free, from a limited selection of books.
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.