There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The electric chair was invented by a dentist!
122
A small airplane can fly backwards.
75
The first alarm clock could only ring at 4 a.m.
120
A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
The United States produces enough plastic film annually to cover the entire state of Texas.
13