NASA's robotic spacecraft Osiris-Rex is set to begin on Tuesday a delicate operation to store the precious particles it scooped up from the asteroid Bennu, but which were leaking into space when a flap got wedged open. The probe is on a mission to collect fragments that scientists hope will...

His press secretary once described President Donald Trump as the “most tested man in America” when it came to COVID-19. And variations on that message were the White House ready response any time critics questioned the president's lax approach to following guidelines for avoiding the novel...

A major non-profit health emergencies group has set up a global laboratory network to assess data from potential COVID-19 vaccines, allowing scientists and drugmakers to compare them and speed up selection of the most effective shots. Speaking to Reuters ahead of announcing the labs...

More than 60 million people in India -- 10 times the official figure -- could have contracted the novel coronavirus, the country's lead pandemic agency said Tuesday, citing a nationwide study measuring antibodies. According to official data India, home to 1.3 billion people, is the world's...