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Homeopathy – a theory according to which a disease can be cured by infinitesimal doses of the substance that caused it; Eclectic medicine – transformed into alternative medicine, and is no longer considered a scientific theory; Physiognomy, related to phrenology, held that inner character was strongly correlated with physical appearance
العربية; Azərbaycanca; বাংলা; Башҡортса; Беларуская; Беларуская (тарашкевіца) Bosanski; Чӑвашла
This is a list of substances or materials generally considered discredited. A substance can be discredited in one of three ways: It was widely believed to exist at one time but no longer is. Such substances are often part of an obsolete scientific theory. It was once believed to have drastically different properties from those accepted now.
Creation science or scientific creationism is a branch of creationism that claims to provide scientific support for the Genesis creation narrative in the Book of Genesis and disprove or reexplain the scientific facts, theories and scientific paradigms about geology, cosmology, biological evolution, archaeology, history and linguistics.
Various fringe theories have arisen to speculate about purported alternative origins for the human immunodeficiency virus (HIV) and the acquired immunodeficiency syndrome (AIDS), with claims ranging from it being due to accidental exposure to supposedly purposeful acts. Several inquiries and investigations have been carried out as a result, and ...
Objections to evolution have been raised since evolutionary ideas came to prominence in the 19th century. When Charles Darwin published his 1859 book On the Origin of Species, his theory of evolution (the idea that species arose through descent with modification from a single common ancestor in a process driven by natural selection) initially met opposition from scientists with different ...
Dismissing the separate issue of intentional fraud – such as the Fox sisters' "rappings" in the 1850s [23] – the pejorative label pseudoscience distinguishes the scientific ' us ', at one extreme, from the pseudo-scientific ' them ', at the other, and asserts that ' our ' beliefs, practices, theories, etc., by contrast with that of ' the ...
Spontaneous generation is a superseded scientific theory that held that living creatures could arise from nonliving matter and that such processes were commonplace and regular. It was hypothesized that certain forms, such as fleas , could arise from inanimate matter such as dust, or that maggots could arise from dead flesh.