Conversation: On May 19, Indias all-time temperature record was smashed in the northern city of Phalodi in the state of Rajasthan. Temperatures soared to 51?, beating the previous record set in 1956 by 0.4?. India is known for its unbearable conditions at this time of year, just before the monsoon takes hold. Temperatures in the high 30s are routine, with local authorities declaring heatwave conditions only once thermometers reach a stifling 45?. But the record comes on the back of an exceptionally hot season,...