Grist | Topics | 40 Results

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Headline	Author	Published	Section
In the zone Must-have slide No. 1: The narrow temperature window that gave us modern human civilization	Joseph Romm	28 Aug 2008	Gristmill
I am starting a new feature and a new category for must-have PowerPoint slides. I'll begin with my favorite new slide, which shows just how stable the climate has been over the 10,000-year period that allowed modern human civilization to develop and flourish (click figure for larger version): The slide is a must-have because it captures the risk we are taking while also providing a quick visual rebuttal to a very common denier talking point, one that NASA adminis ...
Topics: climate science, greenhouse-gas emissions, James Hansen, climate (all these topics)

Hansen's still got it Right for 27 years: 1981 Hansen study finds warming trend that could raise sea levels	Joseph Romm	28 Aug 2008	Gristmill
'After all, just 20 years ago scientists were worried about the new Ice Age.' This myth is so potent for deniers from Michael Crichton to George Will to Senator James Inhofe that even word guru and strategist Frank 'death tax' Luntz made it a recommended line of attack in his super-slimy 2002 memo to conservatives on how best to cast doubt on climate science. Why do deniers love it so? It makes present global-warming fears seem faddish, saying current climate scienc ...
Topics: James Hansen, greenhouse-gas emissions, climate science, climate (all these topics)

The dogma whisperer A possible consensus perspective on the tax vs. cap debate	Ken Johnson	02 Jul 2008	Gristmill
Last revised: 07/10/2008 In his recent Congressional testimony, James Hansen talked about a 'perfect storm' of climatological tipping points that may soon converge to yield global cataclysm. But another kind of perfect storm is brewing: a technology storm that could rapidly displace fossil fuels and restore global climate sustainability. Effective regulatory policy could provide the kind of incentives and stable investment climate that are needed to facili ...
Topics: climate, climate change impacts, climate science, greenhouse-gas emissions, James Hansen (all these topics)

Climate change ideas for On Day One Day five of the UN Dispatch-Grist collaboration	Ideas for On Day One	27 Jun 2008	Gristmill
The UN Dispatch - Grist collaboration concludes today with discussion of an idea submitted by On Day One user James Hansen -- yes that Dr. James Hansen! Tony Kreindler of the Environmental Defense Fund, Nigel Purvis, Kate Sheppard, Timothy B. Hurst, and David Roberts respond below the fold. Tony Kreindler, media director of the National Climate Campaign at the Environmental Defense Fund As usual, great issues raised ...
Topics: cap-and-dividend, carbon tax, climate, climate change mitigation, climate science, James Hansen, video (all these topics)

We must tax carbon Hansen's message to the planet	Charles Komanoff	25 Jun 2008	Gristmill
Maybe it was the thought of two decades of climate-crisis exhortation, little more heeded than words shouted at a hurricane. Photo: germuska via Flickr.Maybe it was the temporizing of the Democrats and the obstructionism of the GOP. Or it might have been the images of cities, houses and farmland of his native Iowa drowned by the latest '500-year' floods. Perhaps it was all three. Whatever the reasons, the climate crisis' Paul Revere turned it up ...
Topics: cap-and-dividend, carbon tax, carbon trading, climate, climate change impacts, climate science, James Hansen (all these topics)

Revkin interviews Hansen	David Roberts	24 Jun 2008	Gristmill
Here, NYT reporter Andrew Revkin interviews climate scientist James Hansen about the 20th anniversary of his seminal Congressional testimony: More on Dot Earth.
Topics: climate, climate change impacts, climate science, James Hansen, politics, video (all these topics)

Twenty years later The new testimony before Congress	Guest author	23 Jun 2008	Gristmill
The following is a guest post from climate scientist James Hansen, taken from his briefing to the House Select Committee on Energy Independence & Global Warming. ----- My presentation today is exactly 20 years after my June 23, 1988 testimony to Congress, which alerted the public that global warming was underway. There are striking similarities between then and now, but one big difference. Again a wide gap has developed between what is understood about global wa ...
Topics: climate, climate change impacts, climate science, James Hansen (all these topics)

A modern-day Cassandra Thoughts on the 20th anniversary of James Hansen's historic Congressional testimony	Representative Ed Markey	23 Jun 2008	Gristmill
In Greek mythology, Cassandra was given the gift of prophecy -- of seeing the future. But she was also cursed to have no one believe her. For far too many years, Dr. James Hansen has been a modern-day Cassandra. Gifted with a scientific training that allowed him to see the forces at work that are warming the planet, for too many years he was also not believed by many who chose to ignore or deny the scientific reality of global warming. Today, it is my pleas ...
Topics: climate, climate change mitigation, climate science, Ed Markey, James Hansen, legislation, politics (all these topics)

Paul Revere rides again Hansen marks 20th anniversary of landmark testimony to Congress with renewed call to action	Kate Sheppard	23 Jun 2008	Gristmill
James Hansen. Photo: nasa.govIt was a sweltering June 23 in Washington, D.C., when climatologist James Hansen, head of NASA's Goddard Institute for Space Studies, appeared before the Senate Energy and Natural Resources Committee to testify about his certainty that the record high temperatures were the result of human activity. That was 20 years ago. 'The earth is warmer in 1988 than at any time in the history of instrumental measurements,' Hansen told s ...
Topics: climate, climate science, James Hansen, Muckraker, news, politics (all these topics)

A climate hero: An outspoken truth A look back at James Hansen's seminal testimony on climate, part three	Guest author	20 Jun 2008	Gristmill
A Climate Hero: An Outspoken Truth Worldwatch Institute is partnering with Grist to bring you this three-part series commemorating the 20-year anniversary of NASA scientist James Hansen's groundbreaking testimony on global climate change next week. It is written by Worldwatch staff writer Ben Block. Part three of three follows. Part one is here; part two is here. ----- In May 1989, a few months after NASA scientist James Hansen declared that global warming ...
Topics: climate, climate science, James Hansen, politics (all these topics)

A climate hero: The testimony A look back at James Hansen's seminal testimony on climate, part two	Guest author	18 Jun 2008	Gristmill
Worldwatch Institute is partnering with Grist to bring you this three-part series commemorating the 20-year anniversary of NASA scientist James Hansen's groundbreaking testimony on global climate change next week. It is written by Worldwatch staff writer Ben Block. Part two of three follows. Part one is here. ----- An unprecedented heat wave gripped the United States in the summer of 1988. Droughts destroyed crops. Forests were in flames. The Mississippi River ...
Topics: climate, climate science, James Hansen, politics (all these topics)

A climate hero: The early years A look back at James Hansen's seminal testimony on climate, part one	Guest author	16 Jun 2008	Gristmill
Worldwatch Institute is partnering with Grist to bring you this three-part series commemorating the 20-year anniversary of NASA scientist James Hansen�s groundbreaking testimony on global climate change next week. It is written by Worldwatch staff writer Ben Block. Here follows part one. Part two is here. ----- The speakers at a Washington, D.C., climate rally this past Earth Day, April 22, showcased the range of the modern environmental movement. They includ ...
Topics: climate, climate science, James Hansen, National Academy of Sciences, politics (all these topics)

NASA inspector general: NASA suppressed climate science	David Roberts	02 Jun 2008	Gristmill
Remember when James Hansen made a big fuss, saying NASA has been distorting, downplaying, and outright censoring climate science? And conservatives launched a wave of personal attacks against him? Well according to NASA's inspector general, Hansen was right.
Topics: climate, climate science, James Hansen, shenanigans (all these topics)

The world at 350 A last chance for civilization	Guest author	12 May 2008	Gristmill
This guest essay from environmental author and activist Bill McKibben was originally published at TomDispatch, and is reprinted here with Tom's kind permission. ----- Even for Americans, constitutionally convinced that there will always be a second act, and a third, and a do-over after that, and, if necessary, a little public repentance and forgiveness and a Brand New Start -- even for us, the world looks a little Terminal right now. It's not just the economy. W ...
Topics: climate, climate science, grassroots activism, James Hansen (all these topics)

Dear Mr. Gibbons A letter from a climate scientist to Nevada's governor	Guest author	15 Apr 2008	Gristmill
The following is a open letter to Nevada Governor Jim Gibbons from noted climate scientist James Hansen. ----- Dear Governor Gibbons, I am honored to be the recipient of the Desert Research Institute's annual Nevada Medal this year and to attend the awards ceremonies hosted by you and the First Lady. I hope that I may communicate with you as a fellow parent and grandparent about a matter that will have great effects upon the lives of our loved ones. I refer to ...
Topics: climate, climate science, coal, energy, James Hansen, Nevada, politics, state politics (all these topics)

350 ppm or bust Hansen paper released; WaPo fails to link to Grist	David Roberts	07 Apr 2008	Gristmill
Several posts on this site have mentioned a recent paper from James Hansen et al. -- Target CO2: Where Should Humanity Aim? (PDF) -- which argues that the official E.U. target of 550 ppm global atmospheric CO2 is far too high, and that anything over 350 ppm risks putting human beings in a world radically different than anything they've ever known. The final version of the paper is now up, and there's been some good news coverage. For a good overview, see Ed Pil ...
Topics: climate, climate change mitigation, climate science, James Hansen (all these topics)

Fair and balanced? NASA's Hansen responds to NYT's Revkin	Joseph Romm	24 Mar 2008	Gristmill
This post ends with an exclusive look at James Hansen's response to NYT journalist Andy Revkin's piece commenting on Hansen's (draft) article on why we need a CO2 target of 350 ppm. But first the backstory. Revkin used me as the 'balance' for his piece: Some longtime champions of Dr. Hansen, including the Climate Progress blogger Joe Romm, see some significant gaps in the paper (it is a draft still) and part ways with Dr. Hansen over whether such a goal is remotely f ...
Topics: climate, climate change mitigation, climate science, James Hansen (all these topics)

The Hansen (et al.) ultimatum Get back to 350 ppm or risk an ice-free planet	Joseph Romm	20 Mar 2008	Gristmill
Here is the draft [PDF] of the long-awaited defense of why we need an ultimate target of 350 ppm for atmospheric carbon dioxide, by NASA's James Hansen et al., titled 'Target Atmospheric CO2: Where Should Humanity Aim?' (Yes, they know we're already at 385 ppm and rising 2 ppm a year.) The paper does suffer from one analytical weakness that makes it a tad less dire than it appears -- and some people believe the core element of this analysis is wrong (see very end of ...
Topics: climate, climate science, James Hansen (all these topics)

A passing trend Hansen throws cold water on cooling climate claim	Joseph Romm	05 Mar 2008	Gristmill
NASA's James Hansen has weighed in (PDF) to ... ... expose the recent nonsense that has appeared in the blogosphere, to the effect that recent cooling has wiped out global warming of the past century, and the Earth may be headed into an ice age. On the contrary, these misleaders have foolishly (or devilishly) fixated on a natural fluctuation that will soon disappear. As Hansen explains: Weather fluctuations or 'noise' have a noticeable effect even on mo ...
Topics: climate, climate science, James Hansen (all these topics)

Climate Code Red The case for a sustainability emergency	Tom Athanasiou	06 Feb 2008	Gristmill
The pressure to soft-pedal is very, very high. I know because I feel it. I'm tempted. I do not wish to be dismissed as an apocalyptic. So when I read, in this fine and even astonishing report, that 'politics as usual' must be cast aside, and quickly, there's something in me that balks. After all, the mainline debate at Bali was about a '25-40% cut by 2020' for the developed countries. Isn't this enough? Doesn't it tell us that we're already moving as quickly as ...
Topics: climate, climate science, James Hansen (all these topics)

Dr. Hansen to Dr. Merkel Carbon is forever -- so ban new traditional coal plants now	Joseph Romm	24 Jan 2008	Gristmill
Another clear statement (PDF) from the nation's top climate scientist on the scientific need for a dramatic change in global coal policy -- this time addressed to the German chancellor, a fellow physicist. He points out that: The fact that energy and climate advisors, in Germany, the United States, and elsewhere, do not understand the problem is starkly illustrated by repetition of goals to reduce CO2 emissions by a percentage (say 40% by 2020, 80% by 2050, or o ...
Topics: Angela Merkel, climate, climate science, energy, greenhouse-gas emissions, international politics, James Hansen, politics (all these topics)

Hansen v. coal	David Roberts	07 Jan 2008	Gristmill
PRE-PUBLISHING UPDATE: After I wrote this but before I posted it, I got an email from Grist reader CD notifying me of the sad news that Mass.'s gov approved the coal gasification plant. Decisions like this are going to look awfully stupid in a few years. ----- I meant to mention this last week, but better late than never: Kudos to climate scientist James Hansen, not only for being a public advocate against coal, but doing so in a targeted op-ed in the Boston Globe, ...
Topics: climate, climate science, James Hansen (all these topics)

Parting company with McKibben and, maybe, Hansen What is the safe upper limit for atmospheric CO2?	Joseph Romm	31 Dec 2007	Gristmill
The nation's top climate scientist, NASA's James Hansen, apparently now believes 'the safe upper limit for atmospheric CO2 is no more than 350 ppm,' according to an op-ed by the great environmental writer Bill McKibben. Yet while preindustrial levels were 280, we're now already at more than 380 and rising 2 ppm a year! Like many people, in the 1990s I believed 550 was the target needed to avoid climate catastrophe -- but now it's clear that: 550 ppm would lea ...
Topics: Bill McKibben, climate, climate science, greenhouse-gas emissions, James Hansen (all these topics)

Points of no return ahead James Hansen talks about what to do now that we've passed the 'tipping point'	Kit Stolz	14 Dec 2007	Gristmill
For the last few years, James Hansen, the man who first warned Congress of global warming in testimony last century, and the man considered NASA's "top scientist" on climate questions, has been giving talks around the country asking can we avoid dangerous climate change (PDF)? But Hansen has changed his tune: no longer does he ask if we have passed the tipping points of climate change. In a press conference Thursday morning at the American Geophysical Union, h ...
Topics: climate, climate science, James Hansen (all these topics)

Another 'must read' from Hansen 'Long-term' climate sensitivity of 6 degrees C for doubled CO2	Joseph Romm	02 Oct 2007	Gristmill
The nation's top climate scientist is prolific: He has co-authored another important article: "Global Warming: East-West Connections" (PDF). And I'm not just saying that because he cites one of my articles. In fact, we've been having an email exchange and he strongly disagrees with me that it is too late, in a practical sense, to save the Arctic (and hence the polar bear). He believes strong and smart action now could work -- whereas I believe we need ...
Topics: climate, climate science, James Hansen (all these topics)

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