From protecting our waterways to reducing overfishing, we've made a lot of progress since the first Earth Day. Take a look at five big wins in the 46 years since 1970.
In this week's Beyond the Data blog, Deke Arndt explains the climate behind this spring's prairie fires.
Drought has gripped many islands across the Pacific thanks to El Niño and a lack of rainfall.
National Snow and Ice Data Center Director Mark Serreze studied every nook and cranny of two Ellesmere Island ice caps in the early 1980s. Now those ice caps are nearly gone.