The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
The normal static electricty shock that zaps your finger when you touch a doorknob is usually between 10,000 and 30,000 volts!
60
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
The cigarette lighter was invented before the match.
210
There are only 14 blimps in the world.
69
A small airplane can fly backwards.
75