A 110-year-old lemon used by a German WW1 spy to send secret messages from Britain with invisible ink is going on display in ...

The world's oceans are changing, with rising temperatures and different salinity levels. Submarine warfare could be directly affected, and it could be harder to detect the vessels in some areas.

and ambush warfare. Speed, however, isn't a submarine's primary means of defense. Rather it's a submarine's stealth which distinguishes and protects it, and so while submarines can be fast ...

His ultimate goal is to have an army larger than America's, our Moscow correspondent explains. Follow the latest below, and submit your questions for our next war Q&A.

The world's oceans are changing, with rising temperatures and different salinity levels. Submarine warfare could be directly affected, and it could be harder to detect the vessels in some areas. A new ...

With his final breaths, one of the aviators provided information to give Allied artillery accurate coordinates to target ...

Russia Deploys Rescuers, Aid to Myanmar as Earthquake Death Toll Rises Past 1,600 Russia has sent emergency rescue teams, including 20 rescuers, dog handlers, and drone operators, to Myanmar's ...