When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Out of all the senses, smell is most closely linked to memory.
146
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Most dust particles in your house come from dead skin.
48
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Most dust particles in your house are made from dead skin!
67
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304