Even small concentrations of smoke pollution from wildfires can be harmful to human health.
The number of days a year that mosquitoes can transmit disease is increasing in much of the U.S.
The Little League World Series is heating up. See how much hotter summers are getting in Williamsport, Pennsylvania.
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.
Just like the past four years, 2018 is on pace to be one of the hottest years globally.
Summers are getting hotter and this is coming with a cost — cooling demand.
See how the number of warm summer nights is trending in these cities.