Darwin visited four continents on the ship HMS Beagle. Darwin’s theory of evolution by natural selection challenged the idea that God made all the animals and plants that live on Earth.

Evolution happens through natural selection. Darwin was not content to say that organisms evolve. The theory of evolution, he wrote, "even if well founded, would be unsatisfactory until it could ...

Evolution explains how better adapted organisms have an advantage and are more likely to have offspring with this same adaptation. Over many years this leads to the formation of new species.

He began contemplating while aboard HMS Beagle, but it took several years before he came up with his theory of evolution by natural selection. The finches – once they had been identified as different ...

and back to England—a journey that inspired his theory of evolution by natural selection. Darwin was a young man of 22 at the time, a recent graduate of Christ’s College, Cambridge ...

In the great upheaval of scientific thought that followed the announcement of the theory of evolution ... capable of unlimited evolution through the natural selection of variant forms and ...

To explain the remarkable diversity of life histories among species we must understand how evolution shapes organisms to optimize their reproductive success. The principal aim of life history ...

In there he proposed a second theory of evolution. A theory based on sexual ... sexual selection by mate choice is really a kind of natural selection. So, when they see the peacock’s tail ...

Darwinian thinking has been challenged many times, starting with co-discoverer of natural selection Alfred Russel Wallace, who disagreed with some aspects of Charles Darwin's arguments, but was ...

Even in a world of absolute equals, small strokes of luck can shape survival and evolutionary success in nature.

When evolution skeptics want to attack Darwin's theory, they often point to the ... have developed through random mutations and natural selection, even over millions of years?