We know more about Mars than we do the deep, dark sea – and with that comes many baffling puzzles. From cursed shipwrecks to ...

A Chinese research vessel docked in the Cook Islands Saturday as it probed the Pacific nation's deep-sea mining potential, a fledgling industry of mounting interest to both Beijing and Washington. The ...

A Chinese research vessel docked in the Cook Islands Saturday as it probed the Pacific nation's deep-sea mining potential, a fledgling industry of mounting interest to both Beijing and Washington.