In a physical world there will be design constraints, so it is only realistic to expect tradeoffs.
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.