- Emus can't walk backwards.
- The Hindu-Arabic numeral system began developing as early as the 1st century with a full system being established around the 9th century, forming the basis of the numerical digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 that we use today.
- Your normal body temperature is 37C (99F).
- The most popular toothbrush color is blue.
- The worlds smallest bird is the 'bee hummingbird' found in Cuba.
- Wheat is the world's most widely grown plant.
- Humans are the only primates that don't have pigment in the palms of their hands.
- The number 4 is the only number that has the same number of letters in it.
- Your skin is the largest organ making up the human body.
- It was once illegal to slam your car door in Switzerland.
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