Pricing Emissions

The science is very clear. However, carbon tax by itself won't be enough. It should combined with meaningful direct support for clean techs.
-see background information here

The most important first step towards slowing global warming.

The price should be raised much closer to the point at which the negative externality of C02-induced climate change is internalized.

Carbon pricing is not the only sound policy. Regulation may play a roll as can cap and trade.

Needs to be global

I agree if we mean the world price. This is not rational if ONLY only US (or California) does this. World problems require world policies.

Won't be enough, need more energy sources that are not fossil fuel reliant too.
-see background information here

-see background information here

Bringing the private and social costs of emissions into line via taxes has short and long term efficiency benefits.

The price is zero in most of the country, and fossil fuels are still subsidized. Politicians would rather subsidize & regulate than tax.

A price of ~$40 will make deep reductions in the power sector; elsewhere, it is helpful; but technology & other policies are needed too.
-see background information here

Not a difficult question