Activism Quote by Al Gore

“CO2 had increased due to human activities, CO2 will continue to increase unless changes are made, and these increases will affect weather, agriculture, and…

— Naomi Oreskes

The concentration of atmospheric carbon dioxide has changed greatly since fossilized life began on Earth nearly 600 million years ago. In fact, there is…

— Greg Benson

Our CO2 mixes with everyone else's within a year, then hangs around for centuries like a shroud.

— William H. Calvin

Attributing global climate change to human CO₂ production is akin to trying to diagnose an automotive problem by ignoring the engine (analogous to the…

— Timothy Ball

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

Carbon dioxide is…being portrayed as a pollutant; in fact, it makes things grow, and it is not toxic to humans.

— Dana Rohrabacher

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

The role of CO2 is not nearly as clear as the climate catastrophists would suggest.

— Tony Abbott

Concentration of greenhouse gases, especially CO2, have increased substantially since the beginning of the industrial revolution. And the National Academy of Sciences indicates that…

— George W. Bush

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

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

Undoubtedly, at the moment, the major cause of CO2 emission is what happens in developed countries.

— Chris Patten