The concept of zero-cost emissions is behind every corner of our global economy: from single-use plastics, to our reliance on transportation systems running on fossil fuels, to fast fashion, and waste removal systems built on networks of landfills.

Given that the science now shows emissions were never actually free —and in fact emitting excess greenhouse gases (GHG) may cost us our planet — the most straightforward policy to incentivize the right kind of sustainable change across the entire global economy is to set a price for carbon; that is, tax emissions. By establishing a cost of emissions…