New information was released Friday about the shooting death of an unarmed black teenager in Ferguson, Mo., but the answers have prompted still more questions.
As the Ebola outbreak rages in West Africa, it is also unfolding — in a virtual sense — inside the computers of scientists trying to predict how far the outbreak will spread and when it will end.
Kenya's international airport is on high alert, since the Kenya Medical Association has called on the national airline to suspend flights due to concerns over the Ebola outbreak.
The urine test employers typically use to detect marijuana picks up cannabis smoked or swallowed days or weeks earlier. Should firms be allowed to fire workers who legally use marijuana at home?
Studies warn that climate change will threaten corn production in coming decades. Meanwhile, farmers are experimenting with new planting methods in hopes of slowing soil erosion from torrential rains.
Projections suggest that climate change will hurt agriculture in most parts of the world. But some areas of the U.S. could actually see a benefit as corn production moves farther north.
Congressional reporter Jonathan Weisman gives his take on the 113th Congress, including how House Speaker John Boehner has little sway, and business in the Senate has virtually ground to a halt.
In just a few years, the issue has gone from mostly whispers to receiving the attention of the White House. Now, colleges throughout the country are trying to increase awareness about the issue.
The U.S. has begun sending humanitarian aid and conducting limited airstrikes in the attempt to protect Iraq's refugee populations. Going forward, the U.S. is facing several possible approaches there.