Americans remain shaky on the details of climate science even as they have grown increasingly concerned about human activity warming the Earth, according to a national poll by The Washington Post and the Kaiser Family Foundation (KFF) that probed the public’s understanding of climate change. The rising alarm is one of the poll’s most dramatic findings. In just five years, the percentage of people calling climate change a “crisis” has jumped from 23 percent to 38 percent. More than 3 in 4 U.S. adults and teenagers alike agree that humans are influencing the climate. The overwhelming majority of them said...