NASA's X-59 supersonic-but-quiet jet soared over the Southern California desert on Tuesday in the first test flight of an experimental aircraft designed to break the sound barrier with little noise, paving the way for faster commercial air travel.

A new Galleri blood test detected 75% of cancers without current screening options, with over half found in early stage I or II, according to GRAIL researchers in California.

An early version of Grokipedia is now live, with 885K+ articles 'fact-checked' by AI. But in some cases, the content appears to be copied from Wikipedia.

Tampa Bay could get a few players back for its Week 10 clash against New England. Could Chris Godwin be one of those who helps fantasy football owners?

The government rolled out a longer, harder exam this month for aspiring Americans. More than 350,000 Washington Post readers took our quiz. They gave it mixed marks.

Japan's Prime Minister Sanae Takaichi's meeting Tuesday in Tokyo with U.S. President Donald Trump will be a major test for the new leader.

Black sheep niece Mary Trump trolled her estranged uncle over his health boasts and the meaning of his tests. Mary, the daughter of Donald’s older brother Fred, stormed the Trumpworld chat after the president told reporters about his cognitive test during his physical at Walter Reed Medical Center.

A Bay Area biotech company is behind a potentially groundbreaking blood test that promises to be a game-changer in cancer detection with the ability to discover more than 50 types of cancer even before symptoms appear.