William H. Calvin

Perhaps we should put up posters in such places reminding people that where they stand was underwater the last time that the…

— William H. Calvin

Stopping emissions growth represents the most minimal of do-something responses.

— William H. Calvin

Since Serengeti-scale savanna scenes are only one or two million years old, our earliest after-the-apes ancestors didn't move into this scene so…

— William H. Calvin

Climate change has a very high procrastination penalty that just grows with each passing year of inaction - rather like what happens…

— William H. Calvin

Countries that innovate first get the new jobs, developing an economic edge over the C-free laggards that end up having to later…

— William H. Calvin

The real focus needs to be on political action to stop this runaway train, real soon.

— William H. Calvin

Anyone who would tackle our current addiction to fossil fuels is going to have to maneuver around denial.

— William H. Calvin

Carrying on as usual carries enormous risks, condemning today's students to a world of constant insecurity and frequent catastrophes.

— William H. Calvin

Even if we stop the growth, we'd still be adding a constant amount of fossil carbon to the atmosphere each year.

— William H. Calvin

“Our civilization will, of course, be "playing God" in an ultimate sense of the phrase: evolving a greater intelligence than currently exists…

— William H. Calvin

Trusting your energy policy to the fossil fuel lobby is like trusting your health care system to the tobacco lobby.

— William H. Calvin

“It takes a heavy commitment to quality education for all to avoid that stratification of society, those needless degrees of separation. But…

— William H. Calvin

Carbon-free energy is simply something we have to do. The time for talk is past. If we turn around net carbon emissions…

— William H. Calvin

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

Unless we redesign our civilization in numerous ways, all of the science in the world won't save us.

— William H. Calvin

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

— William H. Calvin

It's going to be like herding stray cats, and the political leaders who can do it will be remembered as the same…

— William H. Calvin

You can always spot the pioneers by the arrows in their backs.

— William H. Calvin