"...those trying to discover the origins of life and study the earliest stages of biological evolution have an uphill quest: Over and over it happens that a theory or explanation believed to be well established has to be abandoned or rethought in the light of new findings" (Antonio Lazcano, professor, National Autonomous University of Mexico and president of the International Society for the Study of the Origins of Life, "The Never-Ending Story," American Scientist vol. 91, no. 5, 2003).
[TBC: This is one reason why no alternate theories can be allowed in public schools. The theory of evolution cannot survive any scrutiny.]