Most days could be dangerously hot for 5 billion people by 2100

Webb Detects Carbon Dioxide in Atmosphere of Hot-Saturn WASP-39b

Researchers have discovered an "Ocean planet" named TOI-1452 b, which is slightly greater in size and mass than Earth and is located at a distance from its star where its temperature would be neither too hot nor too cold for liquid water to exist on its surface.

Floating Human Foot at Yellowstone Is Grim Reminder of Hot Spring Dangers