The way Syria and Iraq retake key cities from rebels could say much about each country's future.
Russia's refusal to take responsibility for the 2014 downing of an airliner over eastern Ukraine fits a familiar pattern.
There are several technical hurdles and a ticket would cost $200,000, but Elon Musk has a plan to get people to Mars within a decade or so.
The most important thing about a presidential debate isn't in the highlight reel. It's voters' side-by-side evaluation of the candidates.
The National Museum of African American History and Culture opened Saturday and asked a poignant question of the world.
Income inequality in the sciences could cause promising young scientists to opt out of their chosen fields.
Air strike blunders in Syria are a strong reason to ground warplanes -- and to work anew toward a comprehensive ceasefire.
Tony Blair’s exit from consulting can strengthen his philanthropy.
A close look at France's Muslim community shows a large majority is peacefully integrating into French society.
Polls show that many Americans feel the country is not safe. This weekend's dumpster bomb in New York feeds that narrative. But it's a false narrative.