Jumbo jets use 4,000 gallons of fuel to take off.
19
The ball on top of a flagpole is called a 'truck'.
24
The IRS processes more than 2 billion pieces of paper each year.
28
A small airplane can fly backwards.
75
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
The cigarette lighter was invented before the match.
210
