0 of 20 questions.
Tap water, when viewed under a microscope, looks purple.
When CBS broadcast the first color TV show, nobody besides CBS had color television sets!
A billion years ago, days on Earth were only about 18 hours long.
The Earth is slightly pear-shaped.
Your hair and a rhino's horn are made of the same material.
Your fingernails are not biodegradable.
There are exactly 82 different ways to make change for a dollar.
Someone is born in the US every eight seconds.
Writers used to use bits of swiss cheese instead of rubber erasers to erase pencil marks.
The wingspan of a 747 airplane is longer than the Wright brothers' first flight.
3 quarters, 4 dimes, and 4 pennies is the largest amount of money in coins from which you cannot make change for a dollar.
Earth rotates a second or two slower every decade.
It's impossible to sneeze with your eyes open.
The Eiffel Tower was a gift of friendship from Australia to France.
It's impossible to hum with your mouth open.
According to suicide statistics, Monday is the favored day for self-destruction.
A man made a statue of himself usiing his own teeth, hair, and nails.
A goat's pupils and an octopus's pupils are both rectangular.
A diamond heated to 1405Â°F turns into vapor.
It's impossible to breathe and swallow at the same time.