A new version of Ukraine's Shrike FPV attack drone can sink underwater, then re-emerge to carry out an attack. It might be the next generation of ambush drons.

In just 20 days, my two friends and I built an underground house with a swimming pool, using only simple tools and traditional skills! This incredible DIY project creates a custom-made home, hidden ...

In this video, we spent 25 days constructing a swimming pool and fish pond for an underground house—using only primitive tools and natural materials! Step by step, we built this unique, ...

The Nordic country has a network of underground shelters unmatched in the West and the largest number of reservists in the ...

Stealth submarine to surface ship Ben Rich ... The stealth concept was tested in a 100-by-80-foot plastic swimming pool in ...

Jin Hao Li: Swimming in a Submarine is the first stand-up show I have been to in which, before the show starts, the comedian goes around the audience, giving each person a thumbs-up and asking, ...

The Royal Navy has been monitoring a Russian spy ship after it was spotted ... He said a Royal Navy submarine had been authorised to surface close to Yantar - a highly unusual move.

The UK has tracked a Russian spy ship in its waters twice in recent months. In November, a British submarine followed the vessel and surfaced nearby to turn it away. The UK defense secretary said ...

The UK has tracked a Russian spy ship in its waters twice in recent months. In November, a British submarine followed the vessel and surfaced nearby to turn it away. The UK defense secretary said the ...