Human bodies have a natural cooling system, but it can do only so much in high temperatures and humidity. Here's the science behind how heat kills. And how to protect yourself.

The Subway Is Sweltering. Is There a Way to Put That Heat to Good Use?
Mayor Zohran Mamdani and state transit officials announced a plan to study a heat-capture system that could cool a notoriously hot train station and help heat city buildings in the winter.


