Last month, the United States planted its own figurative flag on a huge chunk of Arctic undersea territory, staking out an expanse of seabed twice the size of California. The new U.S. claim covers ...

Seniors Tiahna Guzman and Camryn Williams will compete with other high school stars from across the country Sunday in Orlando.

Russian nuclear submarines patrol the Arctic seas, while a growing fleet of nuclear-powered ice breakers projects Kremlin power across the region. China and Russia have conducted joint military drills ...