Brazil boasts the most biodiversity of any country on the planet, with more than 50,000 species of plants and trees.

Smallpox killed over a half a billion people in the 20th century.

There aren't actually 57 varieties of Heinz ketchup, and there never were. Company founder H. J. Heinz thought his product should have a number and he liked the number 57.

Forests are home to over 80 percent of land animals and plants and cover 31 percent of the world's total land area. About 1.6 billion people around the world depend on forests for their livelihoods and daily subsistence needs.

Identical twins have DNA that is 99.9% the same. They also have almost nearly identical brain wave patterns. But they do have different fingerprints and teeth marks.

German chocolate cake doesn’t come from Germany, and it wasn't made by someone with German ancestry. It was named for a person, Sam German, who created a type of baking chocolate for Baker’s in 1852.

Mongolia has the world's sparsest population. In some regions, it’s possible to go days without coming across another person.

The Guinness World Records list Madonna as the world's most successful female recording artist of all time; she has sold over 200 million records worldwide. Today she turns 65-years old. Happy birthday, Madonna!

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