From The Guardian: ‘It can’t get much hotter … can it?’ How heat became a national US problem. Heat now kills more Americans than floods, hurricanes or other natural disasters – but cities are facing it almost entirely alone

Heat already kills more Americans than floods, hurricanes or other ecological disasters. That puts sweltering cities like Phoenix – where flights were cancelled last year because it was simply too hot – under growing pressure. But heat is rapidly becoming a national problem.

Recent research suggests warming conditions are leading to suicides, as rising nighttime temperatures deprive Americans of sleep and respite from scorching days. A new study, released last week, predicts that a warming climate will drive thousands to emergency rooms for heat illness. The very hottest days experienced in the US could be a further 15F warmer this century if greenhouse gas emissions aren’t curbed.