Ezekiel 4:12--where Ezekiel is commanded by God to cook his food over his own excrement--has been said by chemical theologists to have been the first human reference to a process for making fullerene-type allotropes of carbon. In fact, chemical theologists discovered the first types of nanocrystalline carbon nanotubes while attempting to replicate the cooking methods the Ezekiel 4:9-12. Heating at higher temperature, pressure, and using feces that contains digested broccoli produces the C60 form of buckminsterfullerene.