Why government causes pollution

All attempts to modify a market from whatever the natural laws of supply and demand would dictate, will cause inefficiency.

Any inefficiencies translate into more raw materials that need to be consumed in order to make and use a product.

More raw materials to accomplish the same goal (of the finished product) causes the purchaser to do more than would normally be required, thus increasing the work s/he would have to do.

This demand for more materials than would be necessary to accomplish the same goal, is causing more demand for materials.

More material used equals more pollution.

Thus, help to decrease pollution by removing artificial costs to products in the form of regulation and taxes.