The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for …

6 days ago · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications …

Oct 19, 2023 · Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection. In the theory of natural …

Evolution helps us to understand the living world around us, as well as its history. Biological evolution is not simply a matter of change over time.

Because the definition of evolution is change in the heritable characteristics of a population over generations, evolution can occur by means other than natural selection.

Jan 27, 2026 · Evolution is the process of heritable change in populations of organisms over multiple generations. Evolutionary biology is the study of this process, which can occur through mechanisms …

2 days ago · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. Such evolutionary changes result from mutations that …

Learn all about the history of life with these resources and articles on natural selection, genetics, cell types, Charles Darwin, and more.

In recent years, the theory of evolution itself has evolved. The idea that it is entirely driven by natural selection is challenged by new discoveries in genetics, epigenetics and developmental...

2 days ago · Life’s story may stretch further back than scientists once thought. Some genes found in nearly every organism today were already duplicated before all life shared a common ancestor. By …