Map: Killer heat and humidity is spiking decades sooner than we feared

At a ‘wet bulb’ temperature of 35 degrees Celsius, a human can’t survive for more than six hours, even in shade and with water. We’re starting to see those conditions more and more frequently, across the planet.

It’s a scenario that some researchers had predicted becoming common later in the century, when climate change may make some regions essentially unlivable. Read more ...