Geoengineering
Nonstate Actors Could Help Govern Solar Geoengineering
Governments are not acting; maybe others could — and should
Although reductions in greenhouse gas emissions continue to be inadequate to prevent dangerous climate change, solar geoengineering appears able to substantially reduce climate risks. More research, including outdoor experiments, is needed to reduce critical uncertainties. This could pose some environmental risks and — arguably more importantly — will raise diverse social concerns, such as research …
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CONTINUE READINGA Solar Geoengineering Milestone Goes Largely Unnoticed
The first explicit, meaningful outdoor test garnered little attention in the news or from environmentalists
In response to insufficient cuts in greenhouse gas emission, some scientists and others are researching solar geoengineering. These techniques would reflect a small portion of incoming sunlight to cool the planet and counter climate change. A major step in solar geoengineering was recently taken, although you probably wouldn’t know it from reading the news or …
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CONTINUE READINGNegative Emissions: The Next Bright Shiny Object in Greenhouse-Gas Emissions Reductions
In ongoing debate over how to slow and stop climate change, the past year or so has seen a large shift of attention and interest toward technological options to remove CO2 from the atmosphere after it is emitted – options generally lumped under the headings “Carbon dioxide removal” (CDR) or “negative emissions technologies” (NETs). These …
CONTINUE READINGHow the Coronavirus is (Not) Like Climate Change
The two have some informative parallels, although some observers draw the wrong conclusions
The coronavirus dominates the news and much of our minds. Here at Legal Planet, we have written about the coronavirus and presidential powers, disaster declarations, fossil fuel production, decision-making under uncertainty, inequality, and cities. I will join the party and consider what are the parallels and differences between the coronavirus crisis and anthropogenic climate change, …
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CONTINUE READINGEurope Mulls its First Climate Law
What would it do in terms of emissions targets and likely actual mitigation?
The European Union is, if one treats it as a country, the world’s third greatest emitter of greenhouse gases (GHGs). It has also been a leader in emissions reduction (“mitigation”), and its per capita emissions are merely 43% of the US’s. The EU government is presently considering a major new climate law that will set …
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CONTINUE READINGMaxing Out NEPA: Environmental Review of Early Solar Geoengineering Field Research
Done right, environmental review can reach what worries people most about climate engineering
A few months ago, Congress earmarked $4 million for the National Oceanic and Atmospheric Administration (NOAA) to research: stratospheric conditions and the Earth’s radiation budget, including the impact of the introduction of material into the stratosphere from changes in natural systems, increased air and space traffic, proposals to inject material to affect climate, and the …
CONTINUE READINGAntacids for the Sea: Artificial Ocean Alkalinization
A potential tool for adaptation and carbon removal, but more research is needed.
The carbonate cycle helps make the oceans one of the largest carbon sinks on the planet. As the oceans’ surface waters mingle with the open air, they absorb enormous amounts of carbon dioxide (CO2), storing it in the water as carbonic acid and carbonates and as limestone on the seafloor. The carbonate cycle is a …
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CONTINUE READINGWe Can’t Count on Cutting Greenhouse Gas Emissions to Prevent Dangerous Climate Change
Although reducing emissions remains essential, it is time to focus on additional responses
Last month, representatives of all countries gathered for their annual meeting to prevent climate change. Despite the motto “Time for Action,” the New York Times described it as “one of the worst outcomes in a quarter-century of climate negotiations.” Should we be surprised? Disappointed? Despairing? I believe that insufficient cuts in greenhouse gas emissions — …
CONTINUE READINGClimate Change, Ozone Depletion, and the New York Times
The Montreal Protocol offers lessons for climate change, but not a role model
In an extended piece yesterday, The New York Times editorial board wrote that “The World Solved the Ozone Problem. It Can Solve Climate Change. The same tools that fixed the ozone hole — science, innovation and international action — can address.” Although the editorial was mostly correct, it missed what I believe to be the …
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CONTINUE READINGGlacial Geoengineering and the Law of Antarctica
Could mega-adaptation projects in Antarctica slow the rise of global sea levels?
As the planet warms over the coming centuries, glacial melt in Greenland and Antarctica will lead to significant sea level rise. This phenomenon threatens to flood coastal cities, submerge island nations, and displace hundreds of millions of people. Coastal adaptation projects underway give us a glimpse into how we will respond to this future. Some …
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