World health organization

10 facts on climate change and health

A man in flooded New Orleans, USA in the aftermath of Hurricane Katrina in 2005.
Veras/Willie Davis

From the tropics to the arctic, climate and weather have powerful direct and indirect impacts on human life. Weather extremes – such as heavy rains, floods, and disasters like Hurricane Katrina that devastated New Orleans, USA in August 2005 – endanger health as well as destroy property and livelihoods. Approximately 600 000 deaths occurred worldwide as a result of weather-related natural disasters in the 1990s, some 95% of which took place in developing countries.

© WHO. All rights reserved.