Whale oil was used in automobile transmissions as late as 1973.
56
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
More than a billion transistors are manufactured every second.
-25
Attics were invented in Attica.
43
To have your picture taken by the very first camera you would have had to sit still for 8 hours!
308
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1