A new mammogram study could raise more questions about when women should start getting breast cancer screening. Harvard researchers are recommending women start getting regular mammograms before age 50. They tracked 7,300 breast cancer patients for about ten years, and found 65-percent of those who died of the disease had never had a mammogram. Their conclusion is that screening women before age 50 would reduce the rate of breast cancer deaths.
Lawyers for Boston Marathon bomber Dzhokhar Tsarnaev are due in court on Tuesday to seek a new trial for their client, who was sentenced to death in June for the 2013 bomb attack that killed three people and injured more than 260.
Top U.S. and Chinese officials will convene this week in Washington for the first round of cyber security talks following the signing of a bilateral anti-hacking accord in September.
A dozen years ago, a mere 3 percent of U.S. households used only cellphones.
U.S. President Barack Obama urged his Turkish counterpart on Tuesday to reduce tensions with Russia while stressing U.S. support for its NATO ally's security.
World leaders launched an ambitious attempt on Monday to hold back rising temperatures, with the United States and China leading calls for the climate summit in Paris to mark a decisive turn in the fight against global warming.