Gary Johnson is the Libertarian Party candidate for president.
Businessman Elon Musk says his company is building a powerful, reusable rocket and a spaceship that may travel to the planet Mars.
An international team of scientists has identified a new kind of “superbug” — or strong bacteria — that has made people sick.
Presidential candidates Hillary Clinton and Donald Trump set out sharply different ideas about America’s allies in Asia during their debate Monday night.
International investigators say a missile transported to Ukraine from Russia was responsible for shooting down Malaysia Airlines Flight MH17.
Elizabeth Murphy and Ryan Barclay were posing for wedding photos along a path in New York City’s Central Park.
Tuesday was National Voter Registration Day in the United States.
Young people in the United States do not have a strong understanding of the world and their place in it.
China has established a clearing center for its money in the United States.
Health experts around the world are more and more concerned about the overuse of antimicrobials.