Tag Archives: Alvarez

What is the evidence for a large asteroid impact at the Cretaceous-Paleogene (K-Pg) boundary?

The hypothesis of a large meteorite impacting the surface of the Earth at the end of the Cretaceous was introduced almost four decades ago.[1] In the ensuing years, the geologic community gathered a large body of data in support of … Continue reading

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Scientific Revolutions: Part 2

Further conceptual revolutions in science Revolutions in the Life Sciences The life sciences have experienced fewer revolutions than the physical sciences. The first major revolution in the biological sciences was initiated by William Harvey, as noted above. The next revolution … Continue reading

Posted in Biology, Catastrophism, Geology, Origin of Life, Philosophical and Historical Perspectives, Plate Tectonics | Tagged , , , , , , , , , , , , , , , , , , , , , , , , | 3 Comments