The IRS processes more than 2 billion pieces of paper each year.
28
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
The first alarm clock could only ring at 4 a.m.
120
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Whale oil was used in automobile transmissions as late as 1973.
56