The first alarm clock could only ring at 4 a.m.
120
Whale oil was used in automobile transmissions as late as 1973.
56
Sony researchers have developed a refrigerator that only opens when you smile.
9
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
There are only 14 blimps in the world.
69
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The first hard drive available for the Apple II had a capacity of only 5 megabytes.
46