A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
It takes six months to build a Rolls Royce...and 13 hours to build a Toyota.
93
Sony researchers have developed a refrigerator that only opens when you smile.
9
A small airplane can fly backwards.
75
The oil used by jewelers to lubricate clocks and watches costs about $3,000 a gallon.
41
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
There's a Mumbai-based pizzeria that now delivers pizza by drone.
4
Jumbo jets use 4,000 gallons of fuel to take off.
19