By PopSci Staff
Posted 06.27.2008 at 1:11 pm 9 Comments
This summer, for the first time in recorded history, there may be no ice on the North Pole. In a dramatic symptom of climate change, the thick frozen layer at the pole is likely to melt away entirely, turning the top of the world from sea ice to sea water.
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.