Too Hot for Humans

How Humidity Makes Heat More Deadly: The Heat Index Explained

How hot it feels is determined primarily by the heat index, a combination of temperature and humidity. Over the the next 60 years, the heat index is predicted to skyrocket. Climate scientist and extreme weather expert Dr. Radley Horton explains how the combination of heat and humidity will cause unprecedented suffering and disruption around the world.

Read the study Horton and his colleagues published this topic in Science Advances in May 2020: “The emergence of heat and humidity too severe for human tolerance.”