text: They also estimate past pH of the oceans to have been more alkaline than now, even though no measurements were made at that time, and then they proclaim the contrivance to be a fact of science. All biology controls pH in extreme ways and has very wide tolerance for pH in environmentswide meaning several pH units, not the tenths being argued. For example, respiration generates ATP by creating a hydrogen ion dam and allowing the escaping protons to turn proteins.