A Quote by Graciela Chichilnisky

We have used the majority of our carbon budget and we are already at dangerous levels of CO2 concentrations, about 400 parts per million. The levels were 250 before industrialization. So the problem is what we have done already and, therefore, what must be undone.

Graciela Chichilnisky

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Graciela Chichilnisky
Born: 1944

I think people become environmentalists through experiences of beauty and grief. There was that pond that you visited when you were a child, and there were frogs and turtles. You go back there and it's dead now. The forest you went to, now there are bulldozers, now it's a strip mall. These experiences of beauty followed by grief affect us more than learning that CO2 levels are now 400 parts per million.

Charles Eisenstein

The industrialization of China alone would increase by 90 percent the concentration of CO2 in our atmosphere and would at least increase the atmospheric CO2 by at least another 100 parts per million.

John Olver

Anything greater than 350 of parts of carbon dioxide per million is more than the planet can safely deal with. It is what's overwhelming our climate system. Because we've been going up about three parts per million per year. And eventually, we will always be above 410, and then above 420, and above 430. We just keep pouring more carbon into the atmosphere.

Donald Trump

On the environmental front there's concern about global warming and high levels of carbon dioxide, and trees take in CO2 and store carbon.

Clive Anderson

About fifty million years ago...geological evidence indicates CO2 levels were several thousand ppm, much higher than now. And life flourished abundantly.

William Happer

We have carbon in the atmosphere. That is a material in the wrong place problem. It's just like what I said about the lead. Lead in the biosphere is not good. Carbon in the atmosphere (over natural levels) is a problem.

William McDonough

We are just about to cross the 400 parts per million threshold.

Christiana Figueres

We must act to reduce the increasingly dangerous and destructive levels of carbon pollution that account for practically all of global climate change.

Ted Lieu

Nothing is being done of any real significance. Our demand is the government must tell the truth about the crisis we're in. And that includes working with communities to build resilience... We want to go to net carbon zero emissions by 2015 and reduce our consumption levels.

Gail Bradbrook

Our ACE proposal will reduce CO2 approximately the same levels that the Clean Power Plan would have, if it had been implemented. And we're reducing CO2 from our CAFE standards.

Andrew R. Wheeler

Scientists are telling us that 350 parts per million [of carbon] in the atmosphere is the upper limit. We're at 387 parts per million now, and we're up in that zone where the risk of going past irrevocable tipping points is elevated. It's no different than going to a doctor and learning your cholesterol is too high, and you're at risk for a heart attack. You have to work to lower your cholesterol and hope to get there before the heart attack comes.

Bill McKibben

A total population of 250-300 million people, a 95% decline from present levels, would be ideal.

Ted Turner

The total efforts of the last 20 years of climate policy has likely reduced global emissions by less than 1 percent, or about 250 million metric tons of carbon dioxide per year.

Bjorn Lomborg

Some 3 million years ago, when the earth was a little more than 3°C warmer than preindustrial levels (about 2.2°C warmer than today), Antarctica had far less ice and sea levels were a stunning 25 meters higher than today. If we stay on our current emissions path, the planet will almost certainly be that warm by the century's end.

Joseph J. Romm

These proven positive consequences of elevated CO2 are infinitely more important than the unsubstantiated predictions of apocalypse that are hypothesized to result from global warming, which itself, may not be occurring from rising atmospheric CO2 levels. The aerial fertilization effect of atmospheric CO2 enrichment is the only aspect of global environmental change about which we can be certain; and to restrict CO2 emissions is to assuredly deny the biosphere the many benefits that accrue from this phenomenon.

Keith E. Idso

Climate change is not just about carbon dioxide levels and melting polar ice caps. It is about our public health and protecting our Earth for future generations.

Mike Quigley

A Quote by Graciela Chichilnisky

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