If the chemical sodium is dropped into water it will immediately and violently explode.
67
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One ragweed plant can release as many as one billion grains of pollen!
51