A team of researchers has recovered the deepest sample ever taken of the Earth’s mantle from a section of seafloor in the Atlantic Ocean. At more than three-quarters of a mile in continuous length, ...

NEW YORK (AP) — An underwater tunnel that passes beneath New York City’s East River sprung a leak Wednesday after a city contractor mistakenly drilled a hole through it, sending streams of water into ...

SEOUL (Reuters) -North Korea has conducted a test of its underwater nuclear weapons system in a protest against this week's joint military drills by South Korea, the United States and Japan, state ...

Russian forces have conducted an exercise in the Baltic Sea including drills to repel an underwater attack, the defence ministry said on Friday. Units of divers "demonstrated skills in detecting and ...

SEOUL, South KoreaSEOUL, South Korea — North Korea said Friday it has tested a nuclear-capable underwater attack drone in response to a combined naval exercise by South Korea, the United States and ...

NEW YORK (AP) — An underwater tunnel that passes beneath New York City’s East River was punctured when a construction contractor accidentally drilled a hole through it. Social media video Wednesday ...

North Korea said Friday it had tested a purported underwater nuclear attack drone in response to a combined naval exercise between South Korea and the United States and Japan this week, as it ...