'The world's population first hit this round number around 1850; it's now about 6 times that'
One billion
NUMBER, PLEASE: The worlds population first hit this round number around 1850; its now about 6 times that
The world's population first hit this round number around 1850; it's now about 6 times that
The world's population first hit this round number around 1850; it's now about 6 times that
NUMBER, PLEASE
One billion
NUMBER, PLEASE