Even small concentrations of smoke pollution from wildfires can be harmful to human health.
Smoke pollution from wildfires threatens the advancements the U.S. has made in cleaning its air.
Smoke pollution is leading to serious public health impacts as large wildfires across the American West become more frequent and destructive.
Most U.S. cities have experienced an increase in the average number of mosquito disease danger days each year. El Paso's increase was larger than most, raising risks of West Nile infections.
The number of days a year that mosquitoes can transmit disease is increasing in much of the U.S.
Climate change is causing a change in location of disease-carrying mosquitoes as the world warms, likely leading to a significant public health challenge in the U.S.
The number of consecutive hot summer days, or heat streaks, is increasing in much of the U.S.
The number of extremely hot summer days is increasing in much of the U.S., and with it, the risk of heat-related illness.