The CDC gave its best-and worst-case scenarios for the Ebola virus outbreak, which may reach more than a million cases by early 2015.
After overnight airstikes in Syria, Obama said the next step to combat ISIS will be equipping and training moderate Syrian opposition forces.
Actor Leonardo DiCaprio gave the opening remarks at Tuesday's U.N. climate summit in New York, saying "humankind’s greatest challenge is now.”
Maryland's move into "alternative investments" cost taxpayers more than $1 billion in unrealized returns, says a new study.
The U.S., along with some of its Arab allies, began bombing the stronghold of the Islamic State group in Syria early Tuesday morning.
The jet — a Sukhoi Su-24 — had reportedly traveled 2,600 feet west of the border into Israel before turning around.
British journalist John Cantlie appears to narrate the second video in the Islamic State group's propaganda "lecture series."