claim: The planet's average surface temperature has risen about 1.62 degrees Fahrenheit ( 0.9 degrees Celsius ) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere.
evidence: The highest air temperature ever measured on Earth was 56.7 °C ( 134.1 °F ) in Furnace Creek, California, in Death Valley, in 1913.