These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection.

VOA: special.2009.02.27

He developed the theory of evolution that life on Earth developed through the process of natural selection.

VOA: special.2009.12.16

A year later,Darwin would complete his detailed study of evolution through natural selection.

VOA: special.2009.12.01

That theory is known as evolution through natural selection.

VOA: special.2009.02.25

As a result,he was almost upstaged by a younger colleague, Alfred Russell Wallace, who developed the theory of evolution through his own research.

VOA: standard.2009.11.25

On stage,Milner tells the story through music. Darwin's theory of evolution through natural selection inspires some tunes,and episodes in his life inspire others.

VOA: standard.2009.11.25

Those infrared emissions will allow the telescope to peer through cosmic dust and gas to see things like the evolution of early stars and galaxies.

VOA: standard.2009.05.14