Originally, BMW was an airplane engine manufacturer.
69
More than a billion transistors are manufactured every second.
-25
A small airplane can fly backwards.
75
The ball on top of a flagpole is called a 'truck'.
24
Windmills always turn anti-clockwise. Except for the windmills in Ireland!
184
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