The U.S. military has proven one of the fiercest proponents of renewable energy, and for totally practical reasons — most importantly cost and safety.
150 Marines who set off from California last week for Afghanistan, are the first to bring renewable energy tech to a battle zone, including portable solar panels, solar chargers, and solar tents.
Military higher-ups plan to rely on renewable energy sources for 50 percent of their power by 2020, which could help the worldwide advancement of those technologies immeasurably.
(READ more in Pop Science)