Whale oil was used in automobile transmissions as late as 1973.
56
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
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
The cigarette lighter was invented before the match.
210
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60