WASHINGTON — President Joe Biden heads to a vital U.N. climate summit at a time when a majority of Americans regard the deteriorating climate as a problem of high importance to them, an increase from just a few years ago. About 6 out of 10 Americans also believe that the pace of global warming is speeding up, according to a new survey from The Associated Press. As Biden struggles to pass significant climate legislation at home ahead of next week’s U.N. climate summit, the new AP-NORC/EPIC poll also shows that 55% of Americans want Congress to pass a bill to...