Increasingly large and intense wildfires in the Pacific Northwest are altering the seasonal pattern of air pollution and causing a spike in unhealthy pollutants in August, new research has found.

An international study demonstrates the impact of the ozone hole on environmental chemical processes at the South Pole.

International agreements to protect the ozone layer have been so successful that they will prevent an estimated 443 million cases of skin cancer and 63 million cataract cases for people born in the United States through the end of this century, according to new research.

According to a new study published in the journal Nature, the global ban of chlorofluorocarbons and other ozone-depleting substances prescribed by the 1987 Montreal Protocol and its subsequent amendments has prevented the eventual collapse of the ozone layer, thereby shielding vegetation from harmful ultraviolet radiation.

As areas across North America experience record-setting heat waves and face extended periods of drought, scientists at the National Center for Atmospheric Research (NCAR) are working to better understand and predict these extreme weather and climate events that impact human health and well-being.