The ball on top of a flagpole is called a 'truck'.
24
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
The cigarette lighter was invented before the match.
210
Jumbo jets use 4,000 gallons of fuel to take off.
19
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12