When scorching temperatures meet high humidity, the air can feel suffocating, much like being trapped in a sauna. "It's no longer just hot—it's dangerous," says Prof. Miaoni Gao, a climate scientist ...

Ancient wooden tools found at a site in Gantangqing in southwestern China are approximately 300,000 years ... the ancient humans at Gantangqing inhabited a warm, humid, tropical or subtropical ...