Investigations continue after at least six Russian nationals die, dozens wounded, following sinking of a tourist vessel.

Egypt’s Red Sea governorate confirmed that six Russians died and that 39 foreign tourists were rescued after the submarine ...

A submarine carrying Russian tourists sank off Egypt’s Red Sea coast on Thursday, leaving at least six people dead and rescue ...

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

Submarines need to operate stealthily and quietly. In some areas, warming waters and changing salinity levels could make that easier.

The Kalibr cruise missile, which has a range of up to 1,550 miles, has seen extensive use in strikes against Ukraine.

Six foreigners, whose nationalities are still unknown, were killed on Thursday when a tourist submarine sank o ...