- 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.
- A fire will burn faster moving uphill than downhill.
- The human body has over 600 muscles (40% of the bodys weight).
- Acorns are poisonous to humans (if eaten it can cause damage to your kidneys).
- Clinophobia is the fear of going to bed.
- Tigers have striped skin as well as fur.
- Albert Einstein never knew how to drive a car.
- The side of a hammer is called a cheek.
- Mount Everest is bigger now than the last time it was measured.
- A humming bird flaps its wings up to 90 times a second (5,400 times a minute).
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