Mild days—perfect for an outdoor picnic or a nice hike—are expected to drop about 14 percent by the end of the century, according to new research.
The Arctic sea ice's typical winter expansion has been sluggish in 2016-17. Following a record-low January extent, this year's winter maximum may wind up being the smallest on record.
Heavy rains in the first part of February 2017 raised water levels in California's Oroville Reservoir past capacity, and erosion of the spillways led to evacuations for communities below the dam.
January 2017 saw hot summertime temperatures dominate across eastern Australia.
La Niña has ended. Our blogger covers what happened last month and what forecasters think is in store for the next few months.