Higher carbon-dioxide levels in the atmosphere change all these things. The gas’s mere presence acidifies seawater. Its ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

SEOUL, South Korea (AP) — North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the U ...

North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

By Choe Sang-Hun Reporting from Seoul North Korea said on Saturday that it was building its first nuclear-powered submarine to enhance its nuclear weapons abilities, and the state news media ...

Ryan Chan is a Newsweek reporter based in Hong Kong, where he previously had over a decade of experience at a local newspaper, covering China and current events around the world. His focus is on ...

Named JS Raigei (with pennant number SS 516), the new Taigei-class boat was inducted into the Submarine Division 1 of Submarine Flotilla 1, which is homeported at the Kure naval base in Hiroshima ...