驾驭太阳：瑞典发明家解锁多风北方的太阳能未来

In his SUV, he and Anders Olsson were accelerating across Sweden’s Lunda Airfield, towing a trailer fitted with a steel mast that suspended the panel. As they gained speed, the panel did some- thing unusual: it floated, catching the wind like a hang glider while staying an- chored to the mast. The speedometer crept toward 100 kilometers per hour. The device began vibrating. Suddenly it snapped free, tumbled through the air and shattered on the runway. They got out of the SUV, took brooms from the back and, in the brisk winter afternoon, began sweeping the runway. …