Last year, when Jonathan Smith was still the president of Earth911.com, a Web site dedicated to recycling, he said he would often board a plane after a speaking engagement or a day of meetings with a dead cellphone in hand. With limited recharging options available, "it was really frustrating," he said. "Having access to a working port or finding an open plug during layovers at the airport was just too unpredictable." Hoping to solve his problem, Mr. Smith bought a portable solar charger he...
Full Story: The New York Times
