The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Most dust particles in your house are made from dead skin!
67
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The smell of freshly cut grass is actually a plant distress call.
31
