I am a naturalist, geologist and biologist. My research showed that all species of life descend from a common ancestor, and with Alfred Russel Wallace I introduced natural selection as the process that drives that branching.
I turn decades of field observation into one testable scientific theory that reorganises a whole field of research.
My science grew from a five-year survey voyage, twenty years of quiet research and experiment, and a network of correspondents worldwide who fed me specimens and facts.
The shape of this portfolio — taller means stronger evidence in that mode.