A meaningful moment in Asia, as the leaders of China and Taiwan sit down for their first direct meeting since the end of the Chinese Civil War.
Three years after bariatric surgery, more than 200 severely obese teens studied had dropped about a third of their weight and improved their metabolism, heart health and self-esteem.
Employers added 271,000 jobs in October. The pace of hiring far exceeded expectations, and may increase chances that the Federal Reserve will hike interest rates at its next meeting.
The National Institutes of Health has issued a moratorium on funding work that puts human stem cells into nonhuman embryos. The concern is that hybrids might develop human brain cells, sperm or eggs.
Brazil says it has greatly reduced the rate of deforestation. That may be true, critics say, but they argue such figures are misleading because so much of the Amazon has already been degraded.
"For my PTSD issues, jail is the least therapeutic atmosphere you could ever imagine," says Iraq veteran David Carlson. "You come in one way and you leave three times worse."
Light pollution has increased by 500 percent at Theodore Roosevelt National Park in North Dakota, thanks to nearby oil fields. Stargazers and oilmen are working together to find a solution.
Mars used to be much warmer and wetter than it is today. Scientists are unraveling the mystery of why it dried out.
A summit between leaders of China and Taiwan this Saturday will be the first in more than 60 years. It complicates Taiwan's already high-stakes presidential race.
Sanders concedes that he trails Hillary Clinton for the Democratic nomination, but also notes that some polls show him doing better than Clinton in matchups against the Republicans.