It is in fact necessary to reduce CO2 emissions. There is no reason why we shouldn't spend our vacations on (the North… — Hans von Storch Copy Share Image
It seems that, notwithstanding the dramatic increases in manmade CO2 emissions over the last decade, the world's warming has stopped. — Tony Abbott Copy Share Image
We allow it to be dumped into this community asset, which is our one and only atmosphere. So that has to change,… — Jay Inslee Copy Share Image
If we don't start thinking big about the CO2 problem, we may miss our opportunity to stop a climate runaway that will… — William H. Calvin Copy Share Image
Climate change is a global issue - from the point of view of the Earth's climate, a molecule of CO2 emitted in… — Jeff Goodell Copy Share Image
Almost every way we make electricity today, except for the emerging renewables and nuclear, puts out CO2. And so, what we're going… — Bill Gates Copy Share Image
There is some CO2-water vapor feedback. But it's not operating on a global scale. The modellers cannot accurately separate water vapour from… — Willie Soon Copy Share Image
I am not at all convinced that human emissions of CO2 are adding to global warming.... I remain to be convinced about… — Nick Minchin Copy Share Image
Changes in clouds and rainfall can overwhelm what little effect CO2-water vapour has on temperature. — Willie Soon Copy Share Image
We are still learning how exactly the Earth reacts to increased CO2 and other greenhouse gases. We know it leads to warming… — Graciela Chichilnisky Copy Share Image
The concentration of atmospheric carbon dioxide has changed greatly since fossilized life began on Earth nearly 600 million years ago. In fact,… — Greg Benson Copy Share Image
You're never going to get the amount of CO2 emitted to go down unless you deal with the one magic metric, which… — Bill Gates Copy Share Image
It looks as though yields of over 10 times what we can currently grow per acre are feasible if you control the… — Ralph Merkle Copy Share Image
The atmospheric CO2 concentration is rising - mainly due to the burning of fossil fuels. It's agreed that this build-up will, in… — Martin Rees Copy Share Image
...it is fairly well agreed that the surface temperature will rise about 1°C as a modest response to a doubling of atmospheric… — John Christy Copy Share Image
What historians will definitely wonder about in future centuries is how deeply flawed logic, obscured by shrewd and unrelenting propaganda, actually enabled… — Richard Lindzen Copy Share Image
A billion homo sapiens are added every 11 years to the planet. The hypertrophy of a single species pushes other life-forms out… — Leonard Sweet Copy Share Image
There are many direct biological benefits that result from higher atmospheric CO2 concentrations. Two of the most important are increased plant photosynthesis… — Keith E. Idso Copy Share Image
My view is that we don't know what's causing climate change on this planet. And the idea of spending trillions and trillions… — Mitt Romney Copy Share Image
Absolutely love the new campaign from the Optimum Population Trust: do your bit for addressing climate change by having fewer children -… — Jonathon Porritt Copy Share Image
Our CO2 mixes with everyone else's within a year, then hangs around for centuries like a shroud. — William H. Calvin Copy Share Image
When Arnold Schwarzenegger goes to his reward - how's that? That's a crack, but I treat Governor Schwarzenegger well in my book.… — Jay Inslee Copy Share Image
About fifty million years ago...geological evidence indicates CO2 levels were several thousand ppm, much higher than now. And life flourished abundantly. — William Happer Copy Share Image
With this information, in light of the increasing human demands on vegetation, it is my personal opinion that capping CO2 emissions or… — Keith E. Idso Copy Share Image
Even if producing CO2 was good for the environment, given that we're going to run out of hydrocarbons, we need to find… — Elon Musk Copy Share Image
