The first household refrigerators cost about $16,000, in today's money!
47
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
There are 2,500,000 rivets in the Eiffel Tower.
98
No piece of square dry paper can be folded more than 7 times in half!
26
The symbol on the 'pound' key (#) is called an octothorpe.
82
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
There is a superhero supply store in Brooklyn with a cape fitting room that has a wind tunnel. They also sell oxygen gum, bottled chaos and have an invisibility testing center.
18
Play-Doh was first manufactured as a wallpaper cleaner.
122