Yale Environment 360: Last month, at the U.S. Marine Corps Mojave Desert combat training center, some of the militarys best and brightest gathered to test the latest in energy-saving gear. The gadgets sound like ones that a green scientist might dream up if set loose in Qs lab -- collapsible solar arrays, electricity-generating backpacks, hybrid power systems using solar panels, and personal cooling vests. But, as I saw on a visit to the center, these devices are very real -- some have already been deployed on the...