JACKSONVILLE, Fla. — Dec. 21 marks the darkest day of the year in the Northern Hemisphere and the start of astronomical winter, known as the winter solstice. The solstice occurs at 10:03 a.m. EST, ...

For years, satellite data suggested that autumn snow cover in the Northern Hemisphere was actually increasing — a surprising twist in a warming world. But a new analysis reveals that this apparent ...

April was the first month in recorded history with average carbon dioxide levels at or above 400 parts per million across the Northern Hemisphere, according to a May 26 announcement by the World ...

NASA has released a spectacular image of Saturn captured earlier this month by the Hubble Space Telescope. The photo was taken on July 4, 2020, from a distance of 839 million miles, during summer in ...

Kentuckians may be hoping for warmer weather after a snowy and cold winter season. Here's what to know about spring, vernal ...

We connected with Florian Winkler to learn how he created such an elegant and informative map that invites exploration.