Researching human evolution, human and animal emotions, and sexual selection.
Researching human evolution and expressions, and revising ‘On the Origin of Species’.
Researching human evolution and expressions.
Swifts and the story of life on earth.
Correcting proofs and researching human evolution, sexual selection, and expressions.
Getting back to work after prolonged illness.
Yet more ill-heath, with slow progress on Darwin’s ‘big book’.
The revolutionary life of Alfred Russel Wallace.
More sickness, more botany.
How the urban jungle drives evolution