Deadly heat waves have parked over cities and the world’s oceans are the hottest ever recorded for this time of year. The amount of heat in the world’s oceans — a marker of human-caused climate change — keeps setting new record highs, Labe said. Heat waves keep hittingThis summer’s heat waves have hit hard in places where people aren’t used to triple-digit heat, unlike in the tropics, climate scientists said. “There’s always heat waves somewhere in the world sometime, but what is very unusual for Europe for this particular year is the frequency and extent of the heat waves.” There’s no question that the climate change increased the probability of really hot, nasty, even unprecedented summers around the world.”