Atmosphere Quote by Al Gore

It's likely that CO2 has some warming effect, but real proof of that hypothesis is tricky. You have to confirm by observation exactly how…

— Nigel Calder

Carbon dioxide isn't the only greenhouse gas out there. Other substances, such as water vapor and nitrous oxide, also trap heat to varying degrees.

— Jamais Cascio

We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.

— James Hansen

Based on the laws of physics, the effect on temperature of man's contribution to atmospheric CO2 levels is minuscule and indiscernible from the natural…

— Robert L Scotto

... The reality is that atmospheric CO2 has a minimal impact on greenhouse gases and world temperature. Water vapor is responsible for 95 percent…

— Walter Cunningham

... those who are absolutely certain that the rise in temperatures is due solely to carbon dioxide have no scientific justification. It's pure guesswork.

— Henrik Svensmark

I believe the earth gets warmer and I also believe the earth gets cooler. And I think history points out that it does that…

— Rick Santorum

CO2 cannot cause global warming. I'll tell you why. It doesn't mix well with the atmosphere, for one. For two, its specific gravity is…

— Joe Bastardi

The climate system is constantly readjusting naturally in a large way - more than we would ever see from CO2. The CO2 kick [impact…

— Willie Soon

The atmosphere does not fathom whether CO2 comes from U.S. oil or Chinese coal, nor do hurricanes lose force because the Heritage Foundation doesn't…

— Paul Hawken

The warming we've experienced in the late 20th century could just as easily be explained by small decreases in cloud cover - natural changes…

— Willie Soon

Changes in clouds and rainfall can overwhelm what little effect CO2-water vapour has on temperature.

— Willie Soon