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Charles Darwin (The Voyage of HMS Beagle)
Darwin embarked on a five year journey around the world in 1831. Along this journey, Darwin filled notebooks with observations on animals, plants, rocks and collected thousands of specimens for study. The fossils he had found helped him in the development of the theory of evolution. The strange plants and animals of the Galapagos islands made him question where they came from, and over time, had they adapted to the environment. Theory of Evolution
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Charles Darwin (Tree of Life)
Depicted in his book (Origin of Species) Darwin included an illustration of the "Tree of Life". In this illustration, Darwin states the idea that species shared a common ancestor at various points in time. Darwin, Charles. On the Origin of Species by Means of Natural Selection. London: J. Murray, 1859. -
Charles Darwin (On the Origin of Species) Published 1859
Charles Darwin published his book "On the Origin of Species by Means of Natural Selection" in 1859. This book contained the proposed theory that organisms gradually evolve through a process called Natural Selection. Natural Selection occurs when organisms that have genetic variations suited to that environment, produce more than those organisms of the same species who don't have those same genetic variations, thus leading to the majority of that species carrying the genetic variation. -
Charles Darwin (The Descent of Man)
Darwin published his book "The Descent of Man". In this book, Darwin challenges religious views, questioning the origin of the human species as well as the age of the Earth. This book applies his theory of evolution through selection to the human species, through the process of sexual selection. Darwin, Charles. The Descent of Man, and Selection in Relation to Sex. London: J. Murray, 1871.
