1804 The world’s population reaches 1 billion. Population growth is the fastest in Europe.
1927 World population reaches 2 billion as death rates fall and birth rates stay high.
1959 The approximately 3 billionth baby is born.
1989 Annual World Population Day is established by the UN on July 11, inspired by the interest in the symbolic 5 billionth baby.
2050 Global population is set to hit 9.7 billion, a slowdown in growth, with fewer babies born per household.
2100 Estimates suggest that the world population will be over 11 billion, posing grave challenges for food supplies.
On October 31, 2011, a baby girl ...