First, colloquial definitions of the word 'theory' are used to denigrate the place of evolution in the world of scientific knowledge. In science, an idea can be a theory and a fact at the same time.

excerpted from The Logic of Scientific discovery (London: Hutchinson, 1959) by Karl Popper A scientist, whether theorist or experimenter, puts forward statements, or systems of statements, and tests ...

Scientists across the world form a scientific community. In school, your peer group are other students of your age. For scientists, their peers are other scientists, usually in the same area of ...

A scientific gentleman, in a recent conversation, broached to us a theory of taste and smell, which, so far as taste is concerned, is, we think, new. A similar theory in regard to smell has been ...

The first person who explained how evolution happens was Charles Darwin with his scientific theory of natural selection. Charles Darwin observed that although individuals in a species shared ...

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Several prominent groups (many of them fundamentalist Christian in origin) argue in favor of a theory of divinely powered "intelligent design" as an alternative to the purely scientific theory of ...