In September 1987 twenty four countries signed the Montreal Protocol, beginning the phaseout of chlorofluorocarbons (CFCs) and other materials that destroy the ozone layer. The international community decided the impact of a small group of industrial chemicals was simply too dangerous, and outlawed them.
Perhaps it is time to take a hard look at another industrial chemical with dangerous global warming impacts — ammonia. Specifically, ammonia that is produced from fossil carbon, with high CO2 emissions. Fossil ammonia.
A phaseout of fossil ammonia would do more than cut CO2 emissions from the fertilizer industry. It is in fact an innovation policy in disguise. The real effect is to drive the technological innovation we need to take on the main game — the decarbonization of energy.