LiDAR (Light Detection and Ranging Technology) reveals Mayan mega city hidden beneath Guatemalan jungle. (Credit: PACUNAM/Canuto & Auld-Thomas)
During WW2, the fear of the Germans deploying gas weapons over London had hospitals protecting themselves and their patients, children included, with protective gas masks.
Source: Daily Sanctuary
7mm pistol fired at close range into an experimental vest.
The Snow Cruiser – Antarctic Expedition Research Foundation of Armour Institute of Technology Project No. 1-69