Two of Charles Darwin-s notebooks containing his pioneering ideas on evolution and his famous “Tree of Life” sketch are missing, believed stolen, the Cambridge University Library said on Tuesday.

This idea merges art with mathematics, offering a meditative drawing experience. 6. The Tree of Life Sketch the iconic tree ...

Charles Darwin's “Tree of Life” sketch is seen on a page of “Notebook B,” one of the trove of Darwin documents that had been stored in the Cambridge University library Two of Charles ...

They include his famous Tree of Life sketch exploring the evolutionary relationship between species. The books were returned anonymously in April, in a pink gift bag. The Darwin in Conversation ...