A small airplane can fly backwards.
75
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
UFO sightings have reduced by over 80% since the introduction of smartphones and public access to HD video.
2
Any modern jet is capable of breaking the sound barrier.
34
Whale oil was used in automobile transmissions as late as 1973.
56
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308