A Leading Expert Reflects on Climate Change and Agriculture

In my podcast series, “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program,” I’ve had the opportunity of engaging in interesting conversations over the past five years with many outstanding academic economists who have carried out work that is relevant for climate change policy.  But an important topic that has not gotten much attention in the podcast – with the exception of my recent conversation with Charles Taylor – is the impact of climate change on agriculture.

That topic is, in fact, the focus of path-breaking research by my most recent guest – Wolfram Schlenker, the Ray Goldberg Professor of the Global Food System at the Harvard Kennedy School.  You can listen to our complete conversation here.

In our conversation, Schlenker, who very recently joined the Harvard Kennedy School faculty after 19 years at Columbia, told me he that he has long been interested in empirically identifying the impact of weather and climate on agricultural yields and prices.

“When I was a grad student, there was actually a very active debate whether U.S. agriculture would benefit or be harmed from climate change. That’s how I got really interested in it, because it seemed like an unresolved issue,” he remarks. “I think one of the common things that I think I was among the first to identify, at least statistically, is this crucial role of extreme heat.”

Weather extremes, Schlenker explains, are extremely important.

“If you look at the EPA’s latest proposal for the revised social cost of carbon, and you look at all the sectoral impacts and mortality, energy consumption, labor productivity, agriculture, the common theme across all of them is that it’s pretty much all driven by how much of the temperature distribution we push into the really upper tail where the outcomes are just very negative,” he says. “I think that’s something that’s been coming back repeatedly in many contexts.”

Schlenker says that he’s excited to co-teach a new Harvard PhD-level course on environmental and climate economics with James Stock, professor in the Harvard Department of Economics, who has also been a guest in my podcast series.

“It’s based partly on the class I taught at Columbia. It’s also based on Jim Stock’s experience that he had from being on the Council of Economic Advisors in Washington, DC, where he worked a lot on biofuel standards and energy transition, and so forth,” Schlenker explains. “We’re trying to merge both the classics, the fundamentals of environmental economics, with recent policy-relevant topics.”

Wolfram also shares his thoughts on the relatively recent youth movements of climate activism, prominent both in Europe and the United States.  He says that while individual actions may not have significant impacts on specific policy initiatives, they have drawn international attention to the issue, which has been beneficial.

“They’ve been really good at setting the agenda and [putting] pressure on policymakers to take this seriously. [These actions can] lead to regulation that could help us potentially make sure we don’t use all those finite resources, and then, really have an effect on climate change,” he says.

For this and much more, please listen to my podcast conversation with Wolfram Schlenker, the 62nd episode over the past five years of the Environmental Insights series, with future episodes scheduled to drop each month.  You can find a transcript of our conversation at the website of the Harvard Environmental Economics Program.  Previous episodes have featured conversations with:

“Environmental Insights” is hosted on SoundCloud, and is also available on iTunesPocket CastsSpotify, and Stitcher.

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Update from the Harvard Methane Initiative

In previous essays at my blog, I have described the university-wide initiative we launched at Harvard in 2023, “Reducing Global Methane Emissions,” a research and outreach cluster of the Salata Institute for Climate and Sustainability.  In today’s blog post, I’m providing an update on some of our activities over the first year of this three-year initiative.  If you’ve already received this update from a separate distribution list, I apologize for the duplication!

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Celebrating Year One of the Harvard Initiative on Reducing Global Methane Emissions 

Overview

The Harvard Initiative on Reducing Global Methane Emissions, supported by the Salata Institute for Climate and Sustainability at Harvard University, is celebrating its first anniversary. The Initiative, which was launched in July 2023, seeks meaningful and sustained progress in global methane-emissions reductions through research and effective engagement with policymakers, as well as with key stakeholders in business, nongovernmental organizations, and international institutions. Methane-emissions abatement can, in the near term, significantly reduce the magnitude of climate change and its impacts, giving the world time to “bend the curve” on CO2 emissions, conduct research on carbon removal, and, more generally, to implement longer-term strategies to mitigate and adapt to climate change.

The Harvard Methane Initiative is one of five ambitious, multidisciplinary, three-year, University-wide climate-research clusters supported by the Salata Institute (with additional clusters to be added soon). As the Initiative celebrates its first anniversary, this update looks back at its interim achievements.

A more detailed description of the Initiative can be found here. 

Research

Research lies at the core of the Harvard Methane Initiative, primarily in the form of projects conducted by multidisciplinary teams of Harvard faculty members and other Harvard researchers that is improving our understanding of strategies to mitigate methane emissions. With seven research projects launched in the Initiative’s first year, and 11 research projects added in the Initiative’s second year, we list below some research briefs published by the Initiative, as well as press mentions.

Research Briefs:

Updating Estimates of Methane Emissions: Rising Emissions in Africa from Rice Agriculture (April 2024)

EPA’s Municipal Solid Waste Landfill Methane Emission Rules (February 2024)

Methane and Trade: Paving the Way for Enhanced Global Cooperation on Climate Change (July 2023)

Updating Estimates of Methane Emissions: The Case of China (May 2023)

Research News:

Methane Sensors are Finding Dangerous Pollutants in Low-income Neighborhoods (March 2024)Methane

Initiative Collaborator Releases Legal Analysis of IRA’s Methane Fee (February 2024)

How Regulators Use Satellite Images of Methane (October 2023)

Using History to Target Methane Super-Emitters (October 2023) 


Outreach: Events, Podcasts, and Resources

The Harvard Methane Initiative places great importance on communicating the results of its research to key stakeholders. Following are reports on such outreach activities, conducted by the Initiative and collaborating Harvard faculty members. 

HEEP Director Robert Stavins Moderates Harvard Climate Action Week Panel on “Strategies for Mitigating Global Methane Emissions” (June 2024); article and video recording. Efforts to measure and mitigate the impact of methane emissions were the topic of discussion at a panel convened as part of Harvard Climate Action Week, sponsored by Harvard’s Salata Institute for Climate and Sustainability and moderated by Harvard Methane Initiative Director Robert Stavins. The panel consisted of these leading experts: Mark Brownstein, Environmental Defense Fund; Jody Freeman, Environmental and Energy Law Program, Harvard Law School; Adam Pacsi, Methane Policy Advisor, Chevron; and Stephen Wofsy, Harvard Paulson School of Engineering and Applied Science. 

Reducing Methane Emissions in the Oil and Natural Gas Sector (February 2024). This animated video, narrated by Jody Freeman, Environmental and Energy Law Program, Harvard Law School, explains the U.S. methane-regulatory process. Regulation of methane emissions, especially in the oil and gas sector, is one of the Program’s principal research areas. See the Program’s methane home page here and several other items associated with the Program in this email update. 

Analyzing COP 28: A Conversation with Jonathan Banks” (December 2023). “Environmental Insights” podcast hosted by Robert Stavins, Director of the Harvard Methane Initiative. Jonathan Banks is Global Director, Methane Pollution Prevention with the Clean Air Task Force (CATF), where he develops and directs all of CATF’s international efforts to reduce methane pollution from energy, waste, and agriculture. 

Global and U.S. Methane Emissions Reduction Progress. Jody Freeman, Director of the Environment and Energy Law Program, Harvard Law School, hosted a podcast in December 2023 as part of the Program’s “Clean Law” series, providing an insightful and wide-ranging overview of global and U.S. developments in reducing methane emissions. 

Harvard Side Event at COP28 on Reducing Global Methane Emissions (November 2023). This video recording of the Initiative’s panel event at the annual UN climate-change conference features James Stock, Professor of Economics and Director, Harvard Salata Institute for Climate and Sustainability; Claire Henly, advisor, non-CO2 gases, US Presidential Envoy for Climate; Helena Varkkey, Project Lead, Initiative on Methane Emissions in Malaysia; Daniel Jacob, Professor of Atmospheric Chemistry, Harvard University; Robert Stavins, Director, Harvard Methane Initiative. 

Harvard Speaks on Climate Change: Satellite Detection of Methane Emissions (December 2023). This video recording features Harvard faculty members Daniel Jacob, Professor of Atmospheric Chemistry; Stephen Wofsy, Professor of Atmospheric and Environmental Science; and James Stock, Professor of Economics and Director, Salata Institute. 

Emma Rothschild on Adam Smith, Methane Emissions, and Climate Change” (November 2023). “Environmental Insights” podcast hosted by Robert Stavins, Director of the Harvard Methane Initiative. See also blog post by Stavins summarizing the conversation. Emma Rothschild is the Jeremy and Jane Knowles Professor of History at Harvard University and the co-lead on a project supported by the Harvard Methane Initiative exploring the use of satellite data to inform short histories of global super-emitter sites. 

Launching a Harvard Initiative to Reduce Global Methane Emissions” (July 2023). Blog post by Robert Stavins, faculty Director of the Harvard Methane Initiative. Blog titled “An Economic View of the Environment.” 

Harvard Hosts International Workshop on Remote Sensing of Methane (June 2023). At a workshop hosted by Harvard in September 2023, leaders of the global effort to track methane emissions with satellite technology discussed how to coordinate their technical approaches and other opportunities for collaboration. The workshop was organized by the United Nations Environment Programme’s International Methane Emissions Observatory, with the support of the Global Methane Hub

The Challenge of Aligning Interests in Pennsylvania Methane Cleanup (September 2023). A climate research workshop hosted by the Salata Institute explored solutions to the problem of abandoned oil and gas wells in Pennsylvania and beyond. 

Methane and Climate Change Policy: A Conversation with Daniel Jacob” (September 2022). “Environmental Insights” podcast hosted by Robert Stavins, Director of the Harvard Methane Initiative. See also blog post by Stavins summarizing the conversation. Daniel Jacob is the Vasco McCoy Family Professor of Atmospheric Chemistry and Environmental Engineering at Harvard University and one the world’s leading experts on satellite-based detection and attribution of methane emissions. He is an active participant in the Harvard Methane Initiative. 

Harvard Environmental Economics Program
Mossavar-Rahmani Center for Business & Government
Harvard Kennedy School79 John F. Kennedy Street Cambridge, MA 02138 USA
© 2023 The President and Fellows of Harvard College
https://salatainstitute.harvard.edu/projects/methanesalata_methaneinitiative@harvard.edu 

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A Rising Star Shares His Thoughts on Land Use & Climate Policy

In my podcast series, “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program,” I’ve had the pleasure of engaging in conversations with a significant number of outstanding economists, who have carried out important work relevant for environmental, energy, and resource policy, including by serving in important government positions.  That inevitably brings with it the reality that many of the people I’ve spoken with have been senior leaders in the profession, with the emphasis on the word “senior.”  I’m very pleased to say that in my most recent podcast, I’ve broken that mold with someone who is a young, rising star in the world of environmental economics, particularly in the realm of analyzing the causes and consequences of changes in land use.  I’m referring to my colleague, Charles Taylor, a relatively new Assistant Professor of Public Policy at the Harvard Kennedy School.  You can listen to our complete conversation here.

Taylor’s research often uses satellite data to address policy questions associated with land use, and at the beginning of our conversation, he explains that he first got interested in land use issues during his time spent as a consultant at McKinsey & Company, following his undergraduate years at the University of Virginia.

“I got to go work abroad in Qatar, Brazil, and Europe, and get a lot of exposure to these big climate change and land-based initiatives that governments and the private sector were doing. And I got really excited by that, and also very quickly learned I didn’t want to be a consultant,” he says. “I felt that I wanted to get more either skin in the game at that time or more in depth into the issues, and that prompted my journey into more of the entrepreneurial world.”

Charles soon connected with David Tepper, a former banker who shared his passion for land use issues, and together they co-founded Earth Partners, a private company that provides land restoration and bio-energy services intended to help rebuild soils, habitats, and other critical ecosystems.

“How do we restore ecosystems to meet all the challenges we’re facing, from water to food security to pollution to climate change, and how do we do that at scale?  [The idea was to] start a company [dedicated to] next generation land management,” he remarks. “A lot of the challenges we’re facing as a society directly or relate to land management, and looking around, I didn’t really see any companies or organizations taking that head on.”

Charles notes that he decided to pivot from his entrepreneurial venture into academia once he realized the limits of what can be accomplished with capital alone.

“We had great small-scale investors who wanted to do good things, but you still had to get their money back in a few years and that limits the scope of what you can do if you really want transformational change,” he explains. “So, that made me say, okay, what if I went back to the research side and found some way I could contribute to these problems on the other side while keeping one foot or at least half my brain in this world of how this … on the ground world works?”

Much of Charles Taylor’s current academic research relates directly to environmental economics associated with land use decisions, and is intended to inform lawmakers and other stakeholders of the benefits of specific policy choices.

“Humans have touched nearly every acre of non-barren land on earth. We’ve transformed it. We farm it for our food. We take its water. We shape its rivers for reservoirs, for irrigation. We use the wood for forests. We build on it for housing… We get our energy out of it, increasingly for renewable energy. We need a lot of it for siting wind and solar. And then climate change interacts with all this,” he says. “So, there’s all these questions I am really curious about [and am interested in] quantifying and using some of the empirical tools we have [to do that].”

Taylor references a recent paper he co-authored with Caltech Assistant Professor Hannah Druckenmiller that examines land use regulation under the Clean Water Act.

“You might see this spurious relationship between where wetlands are lost and more flood damages, for example, to think of one of the benefits of wetlands. And that paper was just trying to find an empirical way to uncover that and give an estimate of the value of wetlands that then could be used by the EPA in measuring the cost and benefits of these types of regulations, which are super important and cover almost all land use decisions and where you’re going to build in the U.S.,” he explains.

For this and much more, please listen to my podcast conversation with Charles Taylor, the 62nd episode over the past five years of the Environmental Insights series, with future episodes scheduled to drop each month.  You can find a transcript of our conversation at the website of the Harvard Environmental Economics Program.  Previous episodes have featured conversations with:

“Environmental Insights” is hosted on SoundCloud, and is also available on iTunesPocket CastsSpotify, and Stitcher.

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