The first country in the world to use postcards was the United States of America.
Lungs are the largest internal organ in the human body.
The atomic number for lithium is 17.
A baby whale is also called a calf.
Euro is the official currency in the United Kingdom.
The first product with a bar code was chewing gum.
Tea contains more caffeine than coffee and soda.
A male canary tends to have a better singing voice than a female canary.
The capital of Australia is Canberra.
The Beatles is a famous rock band from Manchester, the United Kingdom.
Idina Menzel sings 'let it go' 21 times in 'Let It Go' from Frozen.
Black is the most commonly used colour in all national flags around the world.
Mice have more bones than humans.
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