Comprehensive, thorough, 18-minute documentary really drills down into the origins, evidence, and significance of Darwin’s ideas. Clearly and passionately articulated, covering: observations from HMS Beagle, descent with modification, mutation, Fitness, natural selection, fossils. Scientific vs. vernacular meaning of “theory”. Beginnings of paleontology, the age of the earth, the bible. Lamarck; Darwin on the Galapagos, adaptation in finches. Slow publication of The Origin of Species, AR Wallac