Summerlike warmth has been eating away at fall in the United States this year as the season continues to wither in a warming ...

Russian President Vladimir Putin on Tuesday signed a revised nuclear doctrine declaring that a conventional attack on Russia by any nation that is supported by a nuclear power will be considered a ...

If you're looking to go beyond the ordinary with a gift this holiday season, you might want to gift a loved one a ...

A new solar panel material called a perovskite tandem solar cell is being tested in space — and the results are looking good, ...