Brass doorknobs automatically disinfect themselves in about 8 hours.
18
According to studies, men change their minds two to three times more often than women.
72
The sun is 330,330 times larger than the earth.
75
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Out of all the senses, smell is most closely linked to memory.
146
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A cubic yard of air weighs about 2 pounds at sea level.
31
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79