Penguin has lots of math and science books: For Hawking and Darwin: https://www.penguin.co.uk/authors/1014126/stephen-hawking.html https://www.penguin.co.uk/au

Penguin has lots of math and science books: For Hawking and Darwin: https://www.penguin.co.uk/authors/1014126/stephen-hawking.html https://www.penguin.co.uk/authors/1014126/stephen-hawking.ht... https://www.penguin.co.uk/authors/6327/charles-darwin.html https://www.penguin.co.uk/authors/6327/charles-darwin.html For Origin of Species, 'The Annotated Origin' by James T Costa is good, available from Harvard University Press.