Kin_Taburo // Shutterstock. How human height has changed over time—and what might be behind it. A man with a beard and a black t-shirt measures his height with a tape measure.

Average human height in countries such as the U.S., U.K., and Japan has leveled off at around 5 feet and 10 inches over the last few decades. However, height is still increasing in places such as ...

Over the past 200 years, humanity’s population growth has gone hand in hand with profound advances in living standards and health: longer lives, healthier children, better education, shorter ...

Since 1805, the number of humans on Earth has skyrocketed from one billion to eight billion. Zoomed out, the growth appears positively parabolic. For everyone alive today, the present population boom ...

The human population may have lingered at about 1,300 for more than 100,000 years, and that population bottleneck could have fueled the divergence between modern humans, Neanderthals and Denisovans.