On December 19, 2007, a runaway chemical reaction during the production of a gasoline additive destroyed T2 Laboratories in Jacksonville, Florida, killing four people and injuring 32. According to the Chemical Safety and Hazard Investigation Board, which produced this video, awareness of the potential for such chemical reactive hazards is the first step in preventing them...

This amazing animation, done in AutoCad Inventor, demonstrates the design, construction, and function of an internal combustion engine.