Climate change behind July heat in Europe, China and America

Climate change is responsible for intense heat waves gripping the globe this month, a new study finds. Researchers say the deadly hot spells in the American Southwest and Southern Europe could not have happened without the continuing buildup of warming gases in the air.
These unusually strong heat waves are becoming more common, Tuesday’s study said. The same research found the increase in heat-trapping gases, largely from the burning of coal, oil and natural gas has made another heat wave — the one in China — 50 times more likely with the potential to occur every five years or so.
A stagnant atmosphere, warmed by carbon dioxide and other gases, also made the European heat wave 4.5 degrees Fahrenheit hotter, the one in the United States and Mexico 3.6 degrees Fahrenheit warmer and the one in China one 1.8 degrees Fahrenheit (1 degree Celsius) toastier, the study found.
Several climate scientists, using tree rings and other stand-ins for temperature records, say this month’s heat is likely the hottest Earth has been in about 120,000 years, easily the hottest of human civilization.