The key lies in a triple-layered structure and a protein called osteopontin.
Here are unauthorized answers to questions posed by Jerry Coyne’s blog.
Carl Zimmer in the New York Times reports some provocative-sounding news under an attention-grabbing headline.
It’s long been known that the Cambrian explosion isn’t the only explosion of organisms in the fossil record.
There are three general problems with claims of feathered dinosaur fossils.