Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder.

After a winter storm this weekend, the polar vortex will return, bringing subzero temperatures to around 80 million people ...

developed and issued two guiding documents to serve as roadmaps for this effort: the 2022 National Strategy for the Arctic ...

developed and issued two guiding documents to serve as roadmaps for this effort: the 2022 National Strategy for the Arctic ...

Global warming is producing a rapid loss of plant species -- according to estimates, roughly 600 plant species have died out since 1750 -- twice the number of animal species lost. But which species ...

Global warming is producing a rapid loss of plant species – according to estimates , roughly 600 plant species have died out since 1750 – twice the ...