Chemical evolution may refer to:
- Stellar nucleosynthesis, the creation of chemical elements by stellar thermonuclear fusion or supernovae
- Abiogenesis, the transition from nonliving elements to living systems
- Molecular evolution, evolution at the scale of molecules
- Gas evolution reaction, the process of a gas bubbling out (or evolving) from a solution
- Oxygen evolution, the process of generating molecular oxygen through chemical reaction
Famous quotes containing the words chemical and/or evolution:
“Ants are so much like human beings as to be an embarrassment. They farm fungi, raise aphids as livestock, launch armies into war, use chemical sprays to alarm and confuse enemies, capture slaves, engage in child labor, exchange information ceaselessly. They do everything but watch television.”
—Lewis Thomas (b. 1913)
“By contrast with history, evolution is an unconscious process. Another, and perhaps a better way of putting it would be to say that evolution is a natural process, history a human one.... Insofar as we treat man as a part of nature—for instance in a biological survey of evolution—we are precisely not treating him as a historical being. As a historically developing being, he is set over against nature, both as a knower and as a doer.”
—Owen Barfield (b. 1898)