Oxford University Press narrowed a list down to six words and the world had the opportunity to vote for its top choice.

A surprise offensive by rebel forces opposed to Syrian President Bashar al-Assad's regime has led to a new round of fighting ...

Now, in a year expected to be the hottest on record, the aspiration of that era appears dead. Instead, the world has entered a new one, where clean energy is rapidly growing - but not fast enough to ...

Across the U.S. and the world, extreme temperatures are outpacing what scientists expect to happen according to climate models.