Samsung's Galaxy Note 7 is demonstrated in New York on July 28. All owners of the new smartphone have been urged to exchange the device after reports of phones' exploding or catching fire.
The plastic sheet invented by Stanford University chemical engineer Zhenan Bao and her colleagues can be inserted in lithium-ion batteries to avoid overheating.
Zheng Chen/Courtesy of Zhenan Bao
Jim and Lyn Schneider installed solar panels and batteries because bringing grid power to their house in central Wyoming was going to cost around $80,000.
Leigh Paterson/Wyoming Public Radio