Biting Quote by Keith E. Idso

If we don't start thinking big about the CO2 problem, we may miss our opportunity to stop a climate runaway that will trash the…

— William H. Calvin

We face the gravest threat that civilization has ever confronted. It's global in nature and requires a global solution. Increased CO2 emissions anywhere, whether…

— Al Gore

CO2 is so beneficial...it would be crazy to try to reduce it

— Freeman Dyson

Make no mistake: Tackling climate change is vital. But to see everything through the lens of short-term CO2 reductions, letting our obsession with carbon…

— Alex Steffen

We need to put a price on carbon, and that's what cap-and-trade does and that's also what a CO2 tax does. As long as…

— Al Gore

Even if producing CO2 was good for the environment, given that we're going to run out of hydrocarbons, we need to find some sustainable…

— Elon Musk

I think all countries need to aim to cut the CO2 emissions per person, taking account of externalities like imports and exports.

— Martin Rees

By geo-historical standards, today's atmospheric CO2 levels are remarkably - indeed dangerously - low. We need CO2 in the air to support plant growth…

— Roger Helmer

If you're talking about mugging little old ladies, you don't say, 'What's our target for the rate of mugging little old ladies?' You say,…

— Ken Caldeira

CO2 is a minor player in the total system, and human CO2 emissions are insignificant compared to total natural greenhouse gas emissions. Therefore, lowering…

— Jonathan Duhamel

We have used the majority of our carbon budget and we are already at dangerous levels of CO2 concentrations, about 400 parts per million.…

— Graciela Chichilnisky

We allow it to be dumped into this community asset, which is our one and only atmosphere. So that has to change, and there's…

— Jay Inslee