Why do some ancient animals become fossils while others disappear without a trace? A new study reveals that part of the answer lies in the body itself. The research shows that an animal's size and ...

Why do some ancient animals become fossils while others disappear without a trace? A new study from the University of ...

It turns out these balls of spikes are actually 5-sided echinoderms and thus related to starfish! We look at their beautiful ...