If Earth had the same diameter as the head of a pushpin, how much would all of the other celestial bodies in the universe need to shrink to scale proportionally? It’s a fun, ridiculous question and ...

This image shows a comparison of the size of the baby Parasaurolophus (green) to adult Parasaurolophus, as well as an adult and baby human. Disclaimer: AAAS and EurekAlert! are not responsible for the ...

Human evolution has been a focal discipline since the origins of science itself. Of particular interest is the questions on how and why the human body and brain have evolved to become what they are ...

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.