Friday, December 23, 2011

Climate Change Talking Points for Holiday Gatherings

'Tis the season for uncomfortable conversations! 

For the last several days, Climate Literacy Network (CLN) listserv has had an engaging discussion on how to handle holiday conversations that turn to climate change. This post will draw some suggestions from that exchange and bring in additional ideas of my own.

There are a number of different ideas that follow -- hopefully readers will find a few that are useful. I don't suggest applying the full suite in one dinner conversation. I've written a fair amount, but tried to make it skimmable by highlighting key ideas.

In my own family everyone accepts the scientific consensus that climate change is real and primarily human-caused. A family of science geeks, our arguments are more likely to be about which of siblings has the greater surface-area to volume ratio, as I noted in last year's seasonal post. Last year's post describes how to use your Christmas tree in discussions of, and reflections on, carbon. This post will offer up some other discussion ideas.

I'm lucky that my family all gets along and treats each other with kindness and respect. And I consider myself lucky that we're all pretty amusing science geeks. I know that not everyone is so lucky. Civility should be your starting point. If the conversation can't stay civil, figure out how to end it or change the subject. They are family, after all. And, you won't change anyone's mind and they won't change yours if things become too heated. A bit of disagreement is par for the course, and even kind of fun for some of us, but if people start yelling, well, ick. That's not a good way to spend your family time.

Where to Begin?
Well, beyond being civil, where to begin?

Four simple points can open the door for deeper discussions. A study by Ding et al which draws from work by Kosnick et al suggests four key beliefs about climate change are predictors of support for policy grounded in climate science. Those four points can also make for good cocktail party discussion. They are that climate change is:

  1. real
  2. human caused
  3. serious, and, 
  4. solvable
Friend, climate educator, and CLN colleague, LuAnn Dahlman, has tried it out (stating these four points) at a few holiday parties and finds that people tend to pick up on one of those four points and dig deeper.

After opening the discussion with those four points, let others in the conversation point you to what's next. The rest of the post should be helpful in the follow up. If it's a dinner party conversation where you might not know the folks very well, this can help you to know your audience. If it's your family, then hopefully you already know them. Keep in mind what you know.

Avoid stating misconceptions -- even if it is to refute them. There is compelling research to indicate that just hearing misconceptions reinforces them. See The Debunking Handbook for more information on the discussion of myth or misconceptions (also referenced below).

These suggestions are not hard and fast rules, so I'm going to break the one above immediately, sort of. The atmosphere operates pretty differently from a greenhouse. While this may not be exactly a misconception, analogies always have limitations, and describing the atmosphere as being like a greenhouse is no exception. Like a greenhouse, the atmosphere allows visible light to pass through it and warm up the surface beneath or inside. Like a greenhouse, those warmed surfaces inside [the greenhouse or the atmosphere] radiate heat to the surroundings and warm the air inside. But a greenhouse warms up largely because the glass stops hot air from rising. The atmosphere doesn't have a glass ceiling and it doesn't shut down convection. When the heat is radiated from Earth's surface, the atmosphere is acting more like a heat-trapping blanket than a pane of glass, and some climate communicators prefer the heat-trapping blanket analogy. You can see it's getting complicated. Know your audience well enough to figure out if you want to slice and dice analogies. If that's too complicated, then...

State the scientific case as simply as you can. At the beginning of the year, I wrote a post laying out just two simple facts along with a tiny bit of grade school vocabulary to make the case that climate change is real and human caused. Those points hold up well and you should know them as background for any discussion on climate change. The post itself is brief, but I'll reiterate the key points even more briefly here:
  1. Know the difference between weather and climate. Weather tells you what clothes to wear today. Climate tells you what clothes you should own.
  2. Carbon dioxide and other greenhouse gases absorb heat and make the atmosphere warm up. It's very simple to demonstrate, and the post includes a short, sweet video.
  3. Each and every "normal" middle class or wealthy American is putting tons and tons and tons of carbon dioxide into the atmosphere. Where do you think the gasoline in your car goes when you burn it?
Energy use is central to the human contribution to climate change. We need energy to make things and to move people, products and information. Almost all of our energy use comes from burning stuff which puts a lot of carbon dioxide (and other stuff) into the air. Reducing energy use not only reduces climate impact, but also saves money, reduces our dependency on foreign countries, and helps keep our air and water cleaner. Aspects of it -- like living closer to where you work and therefore shortening your commute, or telecommuting can also give you more time. 

The Joel Pett cartoon below captures this set of issues very, very well.


Let people feel safe in disagreeing with you. Evidence alone is generally not sufficient to change a tightly held belief. Most scientific issues are not just scientific issues. Scientific issues with serious implications about the nature of our economy and our society are never just scientific issues. They also are issues of identity and community. Even the bluntest evidence may not be sufficient for the most deeply committed to their beliefs. But I still favor sharing blunt evidence.

The scientific understandings of climate change have become tightly connected with politics. Perhaps that not a strong enough statement -- for some, what they believe about humanity's role in climate change is a central part of their worldview. That tight connection is problematic as it makes people believe that if they change their position on climate change, then they are also undergoing a conversion experience that separates them from their identity and their community. Seen this way, it's akin to a religious conversion. But it doesn't need to be that big a shift -- one can be of any political persuasion and accept the scientific consensus on climate change. As Kathryn Schulz notes in the excellent book, Being Wrong: Adventures in the Margin of Error, people are not shunned by their community when they adopt a belief the community scorns, but rather when they abandon a belief the community cherishes. 

Adopting climate friendly policies means adopting policies that reduce government waste and take our troops out of harms way. These policies not only reduce our emissions but also reduce or eliminate the need to be in places that provide fossil fuels. Furthermore, resupply convoys are often military targets and the lion's share of what is being resupplied is typically fuel. See Operation Free, a coalition of veterans and national security organizations that recognize the role of climate change and energy dependency in national security.

It's worth stating that the tight connection between climate change and politics is problematic for the reason stated above, but that tight connection is also essential as politics should deal with things that matter. And, as noted above, climate change is serious.

Relevance Helps
Draw on the local and familiar. Polar bears, penguins, and glaciers matter a great deal, but most of the people I know have very limited experience with any of them. 

As a native Buffalonian, though, I find it odd that Buffalo had no measurable snow in November for only the fourth time in 140 years of record keeping. Of course, one weird month doesn't equate to climate change. Even though it's now over a month -- the lowest snow totals for a winter on record as of December 23, 2011.  However, the fact that the third snowless November on record was 2009, and one begins to wonder. 

As the husband of a long-time avid gardner, I know too that the length of the growing season has been creeping longer and longer over the last couple of decades. These kinds of changes were predicted by climate models and when predictions regularly hold up, people should give more credence to the predictors.

Stories are helpful. It's a story that I've got a brand new snowblower and have had no excuse to use it. The story may change as Lake Erie is 40° F in late December. That means lake effect snow will be possible for sometime to come. Lake effect snow has increased over the past century as a result of warmer lakes in winter.


What about the weather where you are? Or where you're from? Chances are fairly good it was a very unusual year -- 56% of the U.S. experienced an unusually dry year (top 10% historically) or unusually wet year (again, top 10% historically). That link includes a list of some cities that have broken precipitation records so far this year. Note that Binghamton didn't merely break its record -- the record was washed away in a deluge. 

Climate models predict that climate change will make wet places wetter and dry places drier. While climate science does make this sort of general prediction, how fast these changes will take place is tricky, especially on local and regional scales. 

It matters that climate pattens are changing because successful farming (and therefore a dependable food supply) is much easier when the climate is stable. It's a lot easier to do a range of business activities in a stable climate than in an unpredictable one, and climate change brings climate destabilization. And public safety is easier to protect when things are stable.


Resources for Going Further
There are many great resources for deepening understandings. Here are two that include specific attention to how to talk to climate change contrarians:
  • Earth: The Operators' Manual -- a PBS series with an accompanying website.
  • The Debunking Handbook -- this short publications offers valuable insights into how to avoid your advocacy backfiring. You may be familiar with the feeling more entrenched in your beliefs after a debate. Chances are fairly good that the person you debated also feels his or her beliefs more strongly.
What suggestions do you have? Please use the comments for sharing ideas.

Friday, November 11, 2011

Marcellus Shale 101: The Science Beneath the Surface

The second post in a series of two.

The heart of this post is the Prezi used in a session of the same title (as this post) at this week’s Science Teachers’ Association of New York State’s (STANYS) Annual Meeting in Rochester, NY. This is one of two presentations related to the Marcellus Shale done by PRI staff at the STANYS meeting. The other is posted here. The two sessions had some overlapping content, but emphases differ.

This session began with a Google Earth file that includes several Marcellus Shale-related elements. Download that here: http://bit.ly/STANYS2011_Marcellus_kmz . The kmz file includes an overlay showing where the Marcellus is exposed in New York State, images of outcrops of the Marcellus Formation, overlays that allow the comparison of paleogeography with the distribution of the Marcellus Shale, and the locations of the thousands of existing gas wells (not generally Marcellus wells) in Chautauqua County. And more.
See the Prezi below or here: http://bit.ly/STANYS2011Marcellus101


There's No Such Thing as a Free Megawatt: the Marcellus Shale, energy and the environment

The first in a series of two.

The heart of this post is the Prezi used in a session of the same title (as this post) at this week's Science Teachers' Association of New York State's Annual Meeting in Rochester, NY. This is one of two presentations related to the Marcellus Shale done by PRI staff at the STANYS meeting. The other will be posted separately. The two sessions had some overlapping content, but emphases differ.

This is also cross-posted on our Marcellus Shale blog: The Science Beneath the Surface.



Friday, July 1, 2011

A follow up to Musings on Mowing

A four second follow up to Musings of a Manual Mower.


Untitled from Don Duggan-Haas on Vimeo.

Watch it full screen (or you won't be able to tell the grass is actually being cut). The idea of sharing this is to simply show that it works in much the same way as many of us have long mowed our lawns. You walk back and forth pushing the thing. And I find time lapse kind of amusing.

Don Duggan-Haas

Monday, May 30, 2011

The Musings of a Manual Mower

Today, Memorial Day, I mowed my yard with a power mower for the first time since we bought our house almost four years ago. The incessant rain of the last several weeks had turned my yard into a jungle and I just didn't have the extra hours this added thickness of grass would add to the work my Great States reel type mower and I have done routinely handled together over our tenure in this house.

My Great States reel-type mower. Other name plates are made by the same manufacturer.


So I borrowed my neighbor Joe's 22 inch mulching power mower. He assured me the Earth would forgive me. Joe's is not a fancy mower -- not self-propelled or bagging or any such fancy stuff, but it seems reliable and started easily on the first pull.

Cutting grass with such a mower for the first time in a few years allows for a fresh comparison. If you're thinking about getting that polluter out of your garage, here's my take on it.

How much of a polluter your lawn mower is depends on its vintage and how well it's running. Since 1995, regulations have reduced mower emissions substantially, and those regulations have been phased in over time. While mowers, of course, contribute far less emissions in total than do cars and trucks, an average mower (in 2008) pollutes 11 times as much per hour according to the EPA.

Today's mowing took a little less time, made a lot more noise, and sprayed grass clippings about in ways I'm not accustomed to. Given the height of the grass, it was also a lot less effort. And, I really, really appreciated the mower and Joe's generosity in lending it. But I hope I can go at least another four years before I feel the need to use a power mower again.

I still had to walk about the same distance, pushing a thingy around that had sharp spinning blades, move things in the yard out of the way (and back), and sweat a bunch. I couldn't listen to podcasts whilst I mowed as I've become accustomed to doing. There are grass clippings strewn about my driveway and up my picket fence (but I figure the incessant rain will take care of that before too long).

I burned up more gas (than the none that I typically burn), and burned off at least a few fewer calories than standard. And I didn't enjoy it nearly as much as my typical quiet little walk about the yard.

It also struck me as being only slightly easier than my typical mowing job, and I've got things slightly out of adjustment on my mower that cost less than $100 new several years ago. I actually inherited it from Dad and I'm not sure quite how old it is. (Click the link to see other reflections on what I inherited from Dad).

I need to work on fine tuning the space between the blades and the cutting bar and stop fantasizing about the new models of reel type mowers that are now available. (Note that the placement of that link doesn't represent an endorsement of the company selling the different models available -- it's only intended to point you to a source of information on what's available).

Looking at what's newly available shows some models that can be raised to a 4" cutting height. Maybe if I had one of those, I'd not have felt the need to use non-human power on the lawn today.

Bottom line: This wet weather let my lawn become more than me and my reel-type mower were willing to handle, but I hope and expect to go at least four more years before using a mower powered by anything but me again. If you're mowing with a walk-behind gasoline-powered mower, consider changing to human-powered mowing.

Don Duggan-Haas

Friday, May 20, 2011

Searching for a deeper understanding of the climate change debate.

Although the effects of climate change are becoming more evident, action and concern over climate change seem to be waning.  Just recently, a Gallup poll reported that only 53 percent of Americans think that global warming is a serious threat to themselves or their family, down from 63 percent in 2007.

Climate Shift, a new report released this spring by American University professor, Matthew Nisbet, aims to find out why climate change policy and understanding has stalled.  The report is part of a larger research effort by a network of social scientists, media analysts, and other scholars to tackle the complex issue from a broad point of view, looking at the climate change threat from an economic, social, and even philosophical perspective.

The report is huge in scope and Nisbet tries to tackle many dimensions of the climate change debate, focusing mainly on flaws within the environmental movement and ultimately calling for a shift in strategy. In the report, he reviewed the funding sources and expenditures for the major national environmental groups and compared them to conservative think tanks and their industry allies, the latter of which lobbied against the 2009 cap and trade climate change legislation.  He looked at patterns in media portrayals of climate change and the amount of attention this issue receives in the media.  He also examined factors that influence how both the general public and scientists/ environmentalists interpret and view climate change politics.

Overall, he argues that the reason science communication over climate change has failed is because it has been communicated in a political context, framed within specific policy solutions that are polarized across the liberal/ conservative spectrum.  He points that out that as the Democratically introduced cap and trade legislation became more politically viable in 2009-2010, there was a simultaneous increase in climate skepticism among Republicans.  Similarly, Nisbet contends that while Al Gore has been instrumental in bringing the climate change issue to the forefront, he has had a polarizing influence in the climate change debate by pairing the message of climate change with strong criticism of Republicans.

Nisbet calls for the need to present climate change as an issue, similar to public health and poverty, that requires addressing on many levels, not just in the context of single policy solutions.  He argues that rather than spending money and resources on countering claims of Republicans and conservatives, environmental groups should invest in a broader range of policies, smaller in scope, and across several levels of government, including towns and counties, to engage people directly.  He also proposes the climate change be framed as an opportunity for technological innovation in terms of moving away from an oil-based economy, rather than as a pollution issue.    

The report has garnered mixed reactions from the environmental community and the blogosphere.  Some find Nisbet's criticism of the environmental movement offensive and accuse him of blaming environmentalists for the death of cap and trade.  Others are praising the report for raising valid questions and proposing a fresh take on how to approach climate change communication.  Either way, the report has spawned much discussion and is bound to be influential in shaping the future of climate change policy.

Monday, May 9, 2011

The Agulhas system may play a key role in ocean circulation and climate change.

Off the coast of East Africa, the Agulhas current sweeps downward towards the continent's tip and, for the most part, swings back east into the Indian Ocean.  Some of it, however, "leaks" out around the cape and into the Atlantic ocean.  New research, published recently in Nature, suggests that this "Agulhas leakage" may have a huge impact on climate variability.
The Agulhas system.   Credit: Erik van Sebille, RSMAS

While is it not known exactly how much water is leaked into the Atlantic, the salty waters of the Agulhas form giant rings and eddies that ultimately join the Atlantic's main current system, the Atlantic Meridonal Overturning Circulation (AMOC), which includes the more familiar Gulf Stream current.  The AMOC carries warm water northwards, keeping parts of North America and Europe several degrees warmer than they otherwise would be.

Under the current climate change prediction models, ice melt from the Arctic and a weakening of the AMOC due to the buildup of greenhouse gases will result in cooling of the North Atlantic.  But authors of the Nature article say that the Agulhas leakage could compensate for these changes, helping to keep the North Atlantic warm, in contrast to these current prediction models .

In addition, geologic and modern data provide evidence that the Agulhas leakage increases under a warming climate, thus further suggesting that it could play a leading role in climate variability, as our climate continues to warm.

Researchers looked at the abundance of tropical plankton (Agulhas fauna) preserved in marine sediments corresponding to the late Pleistocene epoch, a period of repeated glaciations during the past 500,000 years.  They found less Agulhas fauna in sediments corresponding to glacial periods and more Agulhas fauna in sediments corresponding to periods of a warming climate, thus indicating that the leakage had increased during periods of warming.

Modern data, gathered from satellites, oceanographic instruments, and computer simulations show shifts in wind patterns, a southward expansion of Indian Ocean currents, and a warming of the waters in the Agulhas system that all favor an increase in the Agulhas leakage.

The authors of this study point out that more research into the role of the Agulhas leakage in climate change is sorely needed.  Questions such as whether the Agulhas leakage is a potential climate trigger or whether there is a feedback mechanism involved in its variability still remain to be answered.  Hopefully, research into the Agulhas will shed a new light on an often overlooked piece of the climate puzzle.