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 ...

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 ...

North Korea on Friday claimed to have tested an underwater drone capable of carrying a nuclear warhead that could create a “radioactive tsunami,” however, analysts urged skepticism noting a lack of ...

North Korean officials claimed Saturday that the country successfully tested another underwater nuclear-capable drone. The North Korea military reported testing a Haeil-2 underwater weapons system ...

NATO is testing new sea drones that can use artificial intelligence to detect suspicious activity near underwater infrastructure. Fourteen members of the NATO alliance, along with Sweden, have teamed ...

A concrete sphere project off the coast of California, StEnSea style storage, acts as an underwater battery for renewable ...

All 50 campers tested their robots in the pool. A previous version of this article misidentified the number of campers who tested robots. Mizzou Engineering’s three-day youth underwater robotics camp ...

North Korea said Friday that it had tested an underwater nuclear attack drone in response to a naval exercise by South Korea, the United States and Japan. North Korea’s military said it conducted the ...