This impeccably researched biography of a scientific genius covers Darwin’s early life: his childhood, haphazard University education and then his 5-year voyage on the Beagle. Following his return to Britain, he then spent more than 20 years researching and publishing numerous scientific studies while marshalling his evidence for natural selection that would result in his publication of the Origin of Species. Darwin’s scientific life is impressive because of his breadth of interests and knowledge, from biology to geology, and his transition from observation as a naturalist to an experimentalist. Overall, an insightful description of a genius. Be warned, there is incredible detail, more than 500 pages plus footnotes and references. Browne’s second volume in the Darwin biography, The Power of Place, is equally detailed but less interesting without the Beagle adventures. Thanks, Mike, for this recommendation.