TNRTB Archive - Retained for reference information
German geologists discover that almost all of Earth’s carbon resides in the deep portion of the upper mantle. As such, this carbon only makes contact with the biosphere when an exceptionally large asteroid collision triggers large scale volcanic eruptions. The trapping of so much carbon in the deep mantle protects life and its occasional release gives rise to the largest mass extinctions that must precede any large mass speciation events that the Creator plans.
Hans Keppler, Michael Wiedenbeck, and Svyatoslav S. Shcheka, “Carbon Solubility in Olivine and the Mode of Carbon Storage in the Earth’s Mantle,” Nature, 424 (2003), pp. 414-416.
RTB article: Facts for Faith article on the Faint Sun Paradox
RTB books: The Creator and the Cosmos, 3rd edition