The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
German chemists made a replica of a trophy the size of one molecule.
68
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Iron weighs more after it rusts.
68
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21