Formaldehyde—The Origins of Life on Earth 1 Endogenous and Exogenous Formaldehyde 2 Endogenous Production of Formaldehyde 2 Exogenous Synthesis of Formaldehyde 3 Industrial Uses of Formaldehyde 4 Medical Uses of Formaldehyde 5 Global Economic Significance of Formaldehyde 5 Production Capacity and ...