In recent years, palaeontologists have unearthed some of the smallest dinosaurs known - not bigger than 20 feet.
Until very recently, humans tended to reproduce before reaching full adult maturity, as did the dinosaurs. Learn more on this Moment of Science.
Dinosaurs are ancient history, but there is still a very exciting future for fossil research.
The human skeleton offers great insight into a person’s life. It will show the signs of disease, malnutrition, and injuries, as well as aging and sex. Experts can identify a skeleton’s sex by looking at two key areas: the skull and the pelvis.
Researchers who study jellyfish were delighted when a whole bunch of them turned up in Wisconsin. They were found in a sandstone quarry.