Three-quarters of the planet could face deadly heatwaves by 2100

And a third of us already do. It's getting hot out there. Carlos Loreno It killed 739 people in Chicago 1995. In Europe in 2003, it claimed another 70,000 lives. Just seven years later, it would take down 55,000 more in Russia. Extreme heat can and does kill. And while those heatwaves garnered global attention, according…