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 …

Dec 31, 2025 · 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 …

Nov 29, 2025 · Is this iguana an invader? Evolution has answers Posted November 29, 2025 The vine twining on the fence, the insect crawling over the sidewalk, and the flock of birds wheeling …

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 is a process of continuous branching and diversification from common trunks. This pattern of irreversible separation gives life's history its basic directionality.

Aug 5, 2025 · At its core, biological evolution is about change—change in the inherited characteristics of biological populations over generations. But not all change is evolution. To …

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

Jan 2, 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 …

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.

Dec 31, 2025 · Evolution can be seen as a two-step process. First, hereditary variation takes place; second, selection is made of those genetic variants that will be passed on most …