quotations about global warming
Climate change is real, it is happening right now. It is the most urgent threat facing our entire species, and we need to work collectively together and stop procrastinating.
LEONARDO DICAPRIO
Oscar acceptance speech, 2016
There are very few objections to the theory as a whole; everyone in the scientific community agrees that the atmospheric concentration of carbon dioxide is on the rise, and almost everyone believes that it cannot help having some effect. To declare, as some editorialists have done, that the warming has not yet appeared and therefore the theory is wrong is like arguing that a woman hasn't yet given birth and therefore isn't pregnant.
BILL MCKIBBEN
The End of Nature
The warnings about global warming have been extremely clear for a long time. We are facing a global climate crisis. It is deepening. We are entering a period of consequences.
AL GORE
speech at National Sierra Club Convention, Sept. 9, 2005
The planet will continue to cook.
PAUL KRUGMAN
Awake!, November 2011
If we go back 20,000 years, a fair fraction of the world in the Arctic regions was covered by huge ice masses. That was the last glacial period. The temperature during that last glacial period was about four or five degrees Celsius less than today. And yet the environment was just radically different. Not that we're expecting such massive cooling to occur in the future. Quite the contrary. We expect warming of that order of magnitude to occur over the next few hundred years. If the difference between the Ice Age and the present was so large in terms of the physical environment, the vegetation, the amount of ice, the areas where people could live, the amount of rainfall, and so on, if there were such large differences between 20,000 years ago and now, and we anticipate similar differences--but in a different direction, the opposite direction--might occur over the next few hundred years, then I think that is cause for concern.
TOM M. L. WIGLEY
PBS interview
For innovators who find safe and workable solutions to global warming, the rewards will be staggering.
FRED KRUPP
Earth: The Sequel
We need to start communicating is that this is a global struggle, and it's not about what is Sweden doing, and what is the U.S. doing -- it's about what are all of us doing, as one movement.
ALEXANDRIA OCASIO-CORTEZ
attributed, Curious Earth, August 19, 2019
We don't have time to sit on our hands as our planet burns. For young people, climate change is bigger than election or re-election. It's life or death.
ALEXANDRIA OCASIO-CORTEZ
Twitter, December 20, 2018
We certainly are seeing some of the consequences of a changing climate.... California’s major part of its water storage system is in the Sierra Mountains. It snows there, and then we have dams, but it’s the snow and the slow melting of the snow and the forests in the watershed area that helps store the water in California. And much of the Central Valley is desert. Los Angeles, San Diego -- it’s all desert. Without water -- right now, California spends about 20 percent of its electricity moving water. What is being predicted in climate change, there are two bracketed scenarios. The more optimistic one -- that we will really control carbon emissions, that we will get a handle on this, and we’re talking the end of this century -- even by mid-century, in the optimistic scenario, we will have decreased our snow pack by 20 percent on an average basis. And our forests are going to begin to die, because of parasites and such. At the end of this century, optimistic scenario, you will have decreased [snow pack] by 47 percent. In the pessimistic scenario, the snow pack will decrease by 70 to 90 percent.... You’re looking at a scenario where there’s no more agriculture in California. When you lose 70 percent of your water in the mountains, I don’t see how agriculture can continue. California produces 20 percent of the agriculture in the United States. I don’t actually see how they can keep their cities going.
STEVEN CHU
interview, Feb. 9, 2009
We are our own asteroid. Our consumption of fossil fuels has released--is releasing--a store of carbon into the atmosphere that has been accumulating for hundreds of millions of years. Corals, plankton, predators: everything in the ocean is screaming at us to stop. If we don't listen and take action right now, we could be witnesses to the death of most life on earth. We will be the cause of that death... We will have erased ourselves in a blink of geologic time.
ROB STEWART
Save the Humans
The size of our global warming problem requires a large-scale solution. To meet that challenge, a small group of scientists and entrepreneurs is pursuing what they call geoengineering.... Ideas include seeding the oceans in order to increase algae uptake of CO2, injecting chemicals into the upper atmosphere to cool the poles, blocking sunlight by making clouds more reflective, and stationing heat-deflecting mirrors in space. These schemes, however, are the scientific equivalent of a Hail Mary pass--to be pursued only after all other earth-bound solutions have failed. After all, tinkering with a complex system such as the biosphere can generate unintended consequences, and not necessarily positive ones.
BRIAN DUMAINE
The Plot to Save the Planet
The messages are clear. First, global warming is not a future threat--it's the present reality, a menace not to our grandchildren but to our present civilizations. In a rational world, this is what every presidential debate would focus on.
BILL MCKIBBEN
Boston Globe, March 4, 2016
The danger is that global warming may become self-sustaining, if it has not done so already. The melting of the Arctic and Antarctic ice caps reduces the fraction of solar energy reflected back into space, and so increases the temperature further. Climate change may kill off the Amazon and other rain forests, and so eliminate once one of the main ways in which carbon dioxide is removed from the atmosphere. The rise in sea temperature may trigger the release of large quantities of carbon dioxide, trapped as hydrides on the ocean floor. Both these phenomena would increase the greenhouse effect, and so global warming further. We have to reverse global warming urgently, if we still can.
STEPHEN HAWKING
ABC News interview, Aug. 16, 2006
The bulk of scientists are pretty straight about saying this is a probability distribution. And right now our best guess is that we're expecting warming on the order of a few degrees in the next century. It's our best guess. We do not rule out the catastrophic 5 degrees or the mild half or one degree. And the special interests, ..... from deep ecology groups grabbing the 5 degrees as if it's the truth, or the coal industry grabbing the half degree and saying, "Oh, we're going to end up with negligible change and CO2's a fertilizer," and then spinning that as if that's the whole story--that's the difference between what goes on in the scientific community and what goes on in the public debate.
STEPHEN H. SCHNEIDER
PBS interview
It's quite amazing to me. I don't mind talking about skeptics, but there are a very small number of them, and I sometimes wonder why the media, in some perverse sense of fair play, seem compelled to give the same amount of air time or newspaper space to half a dozen skeptics as to thousands of scientists who would essentially agree with the consensus. But although this will contribute to that imbalance, I'm willing to talk a little bit about skeptics. Most skeptics don't actually do research. They comment in a highly selective way on research that other people do. Their own research tends to be very limited, and limited to a very few processes. You don't get anything like a balanced view from skeptics. They tend, as a group, to approach the problem rather like lawyers, making the best case for a client who has a preconceived position, rather than like scientists, which is to examine the climate system with the idea of figuring out how nature works, not to substantiate a preconception that one comes in the door with.
RICHARD C. J. SOMERVILLE
PBS interview
It's freezing and snowing in New York--we need global warming!
DONALD TRUMP
Twitter post, November 7, 2012
It is true that there are still some who deny that global warming is taking place, or that it constitutes a serious problem. Others, while recognizing that global warming is occurring, do not accept that it results from human activities and hence effectively deny that action can be taken to combat it. The great majority of atmospheric scientists, however, now accept that man-made emissions--chiefly, but not only, of carbon dioxide--are aggravating the so-called 'greenhouse effect', thereby causing the world to warm up to what amounts to a dangerous extent.
BARRY HOLDEN
introduction, Democracy and Global Warming
In 1896, a lonely Swedish scientist discovered global warming--as a theoretical concept, which most other experts declared implausible. In the 1950s, a few scientists in California discovered global warming--as a possibility, a risk that might perhaps come to pass in a remote future. In 2001, an extraordinary organization mobilizing thousands of scientists around the world discovered global warming--as a phenomenon that had measurably begun to affect the weather and was liable to get much worse. That was when we got the report from the termite inspector.
SPENCER R. WEART
preface, The Discovery of Global Warming
Global warming -- at least the modern nightmare vision -- is a myth. I am sure of it and so are a growing number of scientists. But what is really worrying is that the world's politicians and policy makers are not.
DAVID BELLAMY
Daily Mail, July 9, 2004
Yes, there is still much about global warming we have to learn and research should continue. But the longer we delay, the more CO2 will build up in the atmosphere. It stays there a long time. If we wait too long before acting, we will pass a point of no return and lock ourselves into centuries of global warming. We could pass one of those dangerous tipping points that could make life very difficult. It's a risk we shouldn't take.
JIM DIPESO
speech, May 1, 2003