Two in five people in the world marry their first love.
270
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Every three seconds, a new baby is born.
122
More than half the population of Kenya is under the age of 15.
71
Nearly 10% of American households dress their pets in Halloween costumes.
36
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28