One ragweed plant can release as many as one billion grains of pollen!
51
Sound travels fifteen times faster through steel than through air.
134
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Most dust particles in your house are made from dead skin!
67
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nearly 50% of the world's scientists are assigned to military projects.
71
The sun is 330,330 times larger than the earth.
75
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20