July 8 (UPI) --New analysis of hundreds of human fossils, some 1 million years old, suggests the average human body size has fluctuated as the planet's climate periodically warmed and cooled.

Skulls: - Left: Amud 1, Neanderthal, 55.000 years ago, - Middle: Cro Magnon, Homo sapiens, 32.000 years ago - Right: Atapuerca 5, Middle Pleistocene Homo, 430.000 ...

Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy ...

The average body size of humans has fluctuated significantly over the last million years and is linked to a changing climate, according to research published Thursday. A team of researchers led by the ...

Big bodies are good for cold places. That's the gist of a foundational rule in ecology that has been around since the mid-1800s: Animals that live in colder places tend to have larger bodies, ...

The human body is a machine whose many parts—from the microscopic details of our cells to our limbs, eyes, liver and brain—have been assembled in fits and starts over the 4 billion years of our ...