To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
Mico headphones read your brainwaves and select music based on your state of mind.
7
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Jumbo jets use 4,000 gallons of fuel to take off.
19
Whale oil was used in automobile transmissions as late as 1973.
56