I understand that many people reduce their pollution just from knowing how much they pollute.
How about having every airplane ticket show how much pollution and greenhouse gas emissions each flight causes—designed, prominent, and easy to read, like an Energy Star label or cigarette warning?
I’d add a relevant comparison number, like IPCC recommendations. Like this, from MyClimate.org,
How about gas pumps show that information as you fill up your car. Now the pump shows volume of gas and price. To add pounds of CO2 shouldn’t be hard.
How about showing that information on your credit card bill too?
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