Reason #3 why Biden should not rejoin the Paris Climate Accords: it is immoral. A moral international policy is one that expands human flourishing and human freedom. Paris is a path to outlawing fossil fuels, the way to provide affordable, reliable energy for billions of people.

Global CO2 emissions are rising, and not because of the US (1/6th and falling). They are rising because billions of people in the developing world are bringing themselves out of poverty by using fossil fuels to power factories, farms, vehicles, and appliances.

The developing world overwhelmingly uses fossil fuels because that is by far the lowest-cost way for them to get reliable energy. Unreliable solar and wind can’t come close. That’s why China and India have hundreds of new coal plants under construction.

The only moral and practical way to lower global CO2 emissions is to encourage innovation that could make low-carbon energy cheap for everyone. It is immoral and impractical to tell the whole world, especially the developing world, to stay unempowered and poor.

While many claim that our climate is less livable than ever because of fossil fuels, it is actually more livable than ever thanks to fossil fuel powered development. Rising CO2 levels will cause mild, manageable warming as well as significant global greening--not a crisis.