The UN's refugee agency says that the conflict in Syria is now "the biggest humanitarian emergency of our era."
The separatists say they will allow civilians and government troops who lay dow their arms to leave, following a request from Vladimir Putin.
Scientists now believe the current Ebola outbreak began with an animal in West Africa in 2004.
Using social media, intercepted communications and monitoring of citizens abroad, U.S. law enforcement said it was able to identify citizens...
Major food corporations buy small companies dedicated to sustainability in order to help their own practices -- and their images. Does it work?
NASA's SLS rocket could bring humans to Mars and asteroids within 20 years, thrilling earlier skeptics.
China's government is making the country's most popular networks carve out time to air anti-Japanese and "anti-fascist" content.