Here's how NATO gets its tanks across bridges.
A site in Maryland holds a “ghost fleet” of sunken warships.
A mini-sub sitting on the ocean floor has been taken over by sea creatures.
The fastest and highest flying jet aircraft that still operated within the Earth’s atmosphere is the Lockheed SR-71 Blackbird.
Tests partnering a robotic K-Max helicopter with a drone to put out flames proved successful and may become a...