[Johnny555]

A carbon tax only taxes one small part of the full environmental impact of a product.

A synthetic shirt might have less carbon impact than a cotton shirt, but its plastic waste may be poisoning the oceans.

Or, as a made up example, coconut fiber shirt may have environmentally friendly organic degradable waste and a low direct carbon impact, while the demand for coconut caused millions of acres of native forest to be burnt down and replanted with coconut trees. Or maybe it caused the diversion of rivers for irrigation endangering fish and other ecosystems that relied on the rivers. Or maybe the newly planted trees displace food crops, leading to food shortages.

There are a lot of environmental externalities that are hard to account for, and some may not be known for years.

[dflock]

Very true.

However, it's _also_ true that "It is the greatest of all mistakes to do nothing because you can only do little."