PLAINFIELD, Ind. — It starts with a silent plea: a handwritten note claiming a family is starving, followed by a request for help with a few groceries. But shoppers across Plainfield, Avon, Camby, and ...

When the sun goes down, solar panels stop working. This is the fundamental hurdle of renewable energy: how to save the sun's power for a rainy day—or a cold night. Chemists at UC Santa Barbara have ...