An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
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 ball on top of a flagpole is called a 'truck'.
24
Whale oil was used in automobile transmissions as late as 1973.
56
Jumbo jets use 4,000 gallons of fuel to take off.
19
Surgeons who grew up playing video games make 37 percent fewer mistakes.
250
The cigarette lighter was invented before the match.
210
The average car produces a pound of pollution every 25 miles!
18