In the northern summer of 2016, an unprecedented heat-wave spread across Asia. Maximum temperatures reached 52.4 degrees centigrade. The Indian government reported that heat stress killed at least 580 people from March to May.

In India, heat waves are not new. But in addition to the temperature records broken, what the global scientific community found especially remarkable about the heat wave was that, for the first time, researchers determined that this extreme warmth "would not have been possible without climate change". The researchers concluded that "all of the risk" of these extremely high temperatures can be attributed to human-induced global warming.