Carbon dioxide levels throughout the northern hemisphere…

The Arctic is a place that historically, during all preceding human history, has largely been an icy realm with an impact on ocean currents.…

— Sylvia Earle

I am convinced that policies meant to reduce alleged carbon dioxide-induced global warming will be destructive.

— Anonymous

Washington bureaucrats have classified the very air we exhale as a pollutant and have gone unchallenged in this incredible assertion. The logical consequence is…

— Ron Paul

Whether carbon dioxide is quite the environmental villain that some people make it out to be is not yet proven.

— Tony Abbott

As we pump greenhouse gases into our atmosphere, the ocean absorbs carbon dioxide, making the seawater acidic and hostile for shellfish and corals.

— Barry Gardiner

I know that nuclear is better than fossil fuels when it comes to carbon dioxide, but nuclear energy is by no means clean. We…

— Sheryl Crow

Is the warming unprecedented? Probably not. There is abundant historical and proxy evidence for both hotter and cooler periods in human history. Is it…

— Don Aitkin

Centuries-old habitats such as coral gardens are destroyed in an instant by bottom trawls, pulverized by weighted nets into barren plains. And global carbon…

— Ted Danson

Plate tectonics is not all havoc and destruction. The slow movement of continents and ocean floors recycles carbon dioxide dissolved in the oceans back…

— Seth Shostak

Carbon dioxide pollution is transforming the chemistry of the ocean, rapidly making the water more acidic. In decades, rising ocean acidity may challenge life…

— Sigourney Weaver

It’s time to move the debate past the dogmatic view that carbon dioxide is evil and toward a world view that accepts the need…

— Robert Bryce

I am hoping that the scientists and politicians who have been blindly demonizing carbon dioxide for 37 years will one day open their eyes…

— Freeman Dyson

If food was no longer obliged to make intercontinental journeys, but stayed part of a system in which it can be consumed over short…

— Carlo Petrini

[The doctrine of air] I was led into in consequence of inhabiting a house adjoining to a public brewery, where I at first amused…

— Joseph Priestley

Now, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it's about 20 tons. For people…

— Bill Gates