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 ...

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 ...

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

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 ...

Humans are complex organisms made up of trillions of cells, each with their own structure and function. Scientists have come a long way in estimating the number of cells in the average human body.