Sometime around Halloween 2011, the global population topped seven billion. That’s a staggering number of people. In fact, linked arm to arm, a human chain would wrap around the equator roughly 175 times or extend to the moon and back about nine times, according to CBC/Radio-Canada.
Bearing this image in mind, we can be forgiven for believing that there are more humans roaming the Earth today than during all of history and prehistory combined. But is it true?