India, April 10 -- Study finds "non-survivable" heat conditions have already occurred during recent global heatwaves

Deadly heat can occur even below the widely accepted 35degC wet-bulb threshold

Dry heat found to be as lethal as humid conditions, challenging existing safety limits

Older people face the highest risk due to reduced ability to regulate body temperature

India and other densely populated regions may be underestimating heat-related deaths

Sustained periods of non-survivable heat stress have already occurred during recent heatwave events across several parts of the world, killing thousands of people, scientists have found.

A new study published in the journal Nature Communications shows that these extreme, unliveable cond...