quotations about global warming
Avoiding a planet-changing global warming catastrophe is why we urgently need to transform the global energy system to a carbon-neutral one. The clock is ticking. Absent the fossil fuel greenhouse this transformation could be deferred to the 22nd century or later.
MARTIN HOFFERT
interview, Aug. 22, 2007
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 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
Man has reached the point where his impact on the climate can be as significant as nature's.
JOBY WARRICK
Washington Post, November 12, 1997
One very simple truth about Global Warming is this, that it will spare nobody, however rich, mighty and powerful we think we are.
MICHAEL S. BAROI
"Bishop of London to Lead Climate Change Service", Christian Today, November 3, 2006
The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive.
DONALD TRUMP
Twitter post, November 6, 2012
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
There’s enough energy in coal (more than twice oil and gas combined) to run high-tech civilization a few hundred years more; enough for electric power generation by conventional pulverized coal plants; enough for coal-derived synthetic liquid fuel powered motor vehicles and aircraft. Unfortunately, there’s also enough carbon in this coal that burning it is likely to drive climate back a hundred million years, when atmospheric CO2 levels were 3-4 times higher, global temperatures 10 degrees Celsius hotter, sea level 100 meters higher and both poles deglaciated. Dinosaurs and crocodiles roamed the warm polar latitudes of this middle-Cretaceous Earth. We’re well on the path to planet-changing from what Roger Revelle and Hans Seuss called our “grand geophysical experiment:” the transfer of hundreds of billions of tons of carbon in fossil fuels to atmospheric CO2. It’s already started.
MARTIN HOFFERT
interview, Aug. 22, 2007
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 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
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
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
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
It's freezing and snowing in New York--we need global warming!
DONALD TRUMP
Twitter post, November 7, 2012
When the ocean starts rising to the level of whatever building they're in and whatever floor they're on as they write their editorials, yeah, then they'll agree that there's a greenhouse effect and we'd better do something about it. Sure, no matter how lunatic people are, at some point or other they're going to realize that these problems exist, and they are approaching fast. It's just that the next thing they'll ask is, "So how can we make some money off it?"
NOAM CHOMSKY
Understanding Power
The violence present in our hearts, wounded by sin, is also reflected in the symptoms of sickness evident in the soil, in the water, in the air and in all forms of life. This is why the earth herself, burdened and laid waste, is among the most abandoned and maltreated of our poor.
POPE FRANCIS
Laudato Si, May 24, 2015
The planet will continue to cook.
PAUL KRUGMAN
Awake!, November 2011
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
Global warming must be seen as an economic and security threat.
KOFI ANNAN
interview, Jun. 23, 2009
The various processes that lead to the end of nature have been essentially beyond human thought. Only a few people knew that carbon dioxide would warm up the world, for instance, and they were for a long time unsuccessful in their efforts to alert the rest of us. Now it is too late--not too late, as I shall come to explain, to ameliorate some of the changes and so perhaps to avoid the most gruesome of their consequences. But the scientists agree that we have already pumped enough gas into the air so that a significant rise in temperature and a subsequent shift in weather are inevitable.
BILL MCKIBBEN
The End of Nature