Five Democratic candidates for U.S. president debated on national television for the first time last night.
Conflict in the Middle East continues to grow as violence spreads from various flashpoints.
In Yemen, the human rights group Amnesty International has investigated a series of airstrikes against Houthi rebels last summer.
In Jerusalem, Palestinians increased attacks on occupying Israel.
Almost half of jobs in the United States are likely to be automated within the next 20 years.
The workplace has become increasingly dependent on machines.
International investigators say Malaysia Airlines flight MH17 was shot down last year by a Russian-made missile.
Putting her mechanical engineering training to work, Tahira Reid and other researchers at Purdue University are studying how heat treatment interacts with different types of hair and how to prevent damage.
Taiko drummers beat their drums.
Africa has about 5 percent of global air traffic but 20 percent of accidents and deaths in 2014.