Geoengineering

The global conversation about solar geoengineering just changed at the UN Environment Assembly. Here’s how.

National flags at UNEA6 in Nairobi

Duncan McLaren and Olaf Corry reflect on the implications of the UNEA-6 non-decision on solar radiation modification for research and governance

As we wrote in part 1, a Swiss-led proposal to the UN Environment Assembly (UNEA) to establish an expert group on solar radiation management (SRM) proved divisive and was eventually withdrawn. Here we explore why, and what that means for any global conversation about SRM. SRM has long generated concerns that, as a powerful lever …

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Countries failed to agree first steps on solar geoengineering at the UN. What went wrong?

National flags at UNEA6 in Nairobi

Duncan McLaren and Olaf Corry observed as diplomats in Nairobi wrestled with a resolution on solar radiation management

In the last weeks, diplomats from all over the world were negotiating more than twenty draft resolutions at the UN Environment Assembly (UNEA). The Assembly is a biennial intergovernmental meeting which sets the global environmental agenda. It also sets the strategy for the UN Environment Programme (UNEP), and outlines policy responses to address emerging environmental …

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A Big Year on Legal Planet

Planet Earth evolving

Here are the 12 most popular topics in environmental law and climate policy on Legal Planet based on our most-read posts from 2023.

It’s an understatement to say that 2023 was a transformative year for the U.S. climate movement. We saw rapid implementation of landmark federal climate laws, a series of big actions on methane emissions, a deal on Colorado River water usage, and bigger-than-expected climate victories in Sacramento. EPA’s control of toxic chemicals was tested, the U.S. …

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How much should we worry about climate tipping points?

A new report suggests climate tipping events may be inevitable, and urges transformative approaches to climate policy

It’s hard to keep up with the deluge of climate news around COP28. Climate damages are growing. Carbon budgets are running out. Temperature records are being re-written. Despite new pledges, climate action remains hugely insufficient and grossly unfair. And the world may be unable to avoid passing critical climate tipping points. That last comes from …

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The Overshoot Commission Addresses Geoengineering

The Commission tries to make it OK to talk about – not do – solar geoengineering. Its report proposes a moratorium, coupled with efforts to carefully build knowledge.

In this, my third post on the recently released report of the Climate Overshoot Commission, I’ll discuss their treatment of the most challenging and controversial part of their mandate, Solar Geoengineering or Solar Radiation Modification (SRM). As I noted in my introductory post on the Commission, I served as an advisor to the Secretariat and …

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The Climate Overshoot Commission Releases its Report

A dozen global leaders weigh in on the risk of exceeding the Paris temperature targets and what it means for climate response.

The Climate Overshoot Commission recently completed its work, releasing its report at the United Nations last Thursday, September 14. This report comes in conjunction with the U.N. General Assembly and a collection of high-level climate and environment events, including the Sustainable Development Goals Summit, 18-19 Sept, and the Climate Ambition Summit, 20 Sept. The Climate …

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Climate Change is Finally Heating Up Politics – But Not in a Good Way

Pitting defence of our ‘way of life’ against climate policies is a recipe for division and inaction

Climate impacts are growing rapidly in this El Niño affected summer. Despite calls to declare a climate emergency, President Biden has responded only with new measures to help Americans cope with extreme heat. The measures announced include hazard alerts, improved prediction of heatwaves, funding for air-conditioning and cool centers for low income groups, and guidance …

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Comparing the Risks of Climate Change and Geoengineering

C19 French Roberval Balance

The OSTP has adopted a ‘risk-risk’ framing in its report on geoengineering research: will this help or hinder sound climate policy?

Last month’s report on solar geoengineering research from the White House Office of Science and Technology Policy (OSTP) consolidated a shift in the discourse on this controversial technology. Over recent years advocates for more research have increasingly adopted a ‘risk-risk’ framing. As Gernot Wagner puts it in ‘Geoengineering: the Gamble’: “The decision is all about …

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U.S. Climate Law: A Broad & Rapidly Growing Field

There’s a lot of law relating to climate change. A lot!

In preparing to teach a course on climate law, I was really struck by how broad and rich the field has become. Back in the day, it was nearly all international law, but nowadays there’s a huge amount of U.S. domestic law. Most people, even those who work on the field, tend to focus on …

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Solar Geoengineering in the News — Again and Again

An update on the serious and the silly

Solar geoengineering has been prominent in the news lately. It looks like the long-predicted spike of attention to these potential climate responses may finally be starting – with many attendant opportunities for controversy and confusion. For background on solar geoengineering, why it’s important to research, and what the debates over it are, check out various …

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