Tag Archives: greenhouse gas emissions
My Testimony at the EPA
The EPA is holding virtual public hearings this week on its proposal to rescind the 2009 finding that greenhouse gas emissions endanger public health and welfare. If they get away with it, this will gut most greenhouse gas regulations in the US. Here’s what I said to them. Continue reading
The EPA’s “Dagger to the Heart” of US Climate Regulation
On August 1, 2025, the US Environmental Protection Agency announced it was proposing to reconsider its 2009 endangerment finding about greenhouse gas emissions. “Reconsidering” here means rescind, revoke, roll back. In this post I look at why this action is a dagger to the heart of greenhouse gas regulation. Continue reading
Obligations of States in Respect of Climate Change
There was a small glimmer of good news on climate change last week: The International Court of Justice ruled that nation states have legal obligations under climate treaties and customary international law to protect “the climate system and other parts of the environment from anthropogenic greenhouse gas emissions.” Continue reading
Into the Clear Blue Sky
Getting to net zero isn’t enough. Rob Jackson makes the case in Into the Clear Blue Sky that we must first reduce greenhouse gas emissions and then restore the levels of carbon dioxide and methane in the Earth’s atmosphere to pre-industrial levels. It’s a tall order. Continue reading
Washington State’s Climate Commitment Act Explained
In November 2024, voters in Washington State will cast ballots on Initiative 2117 which calls for repealing the state’s Climate Commitment Act (CCA). The CCA is one of seven major laws and programs Washington has enacted to fight climate change. This explainer describes the goals and features of the CCA. Continue reading
A Peek at Peaking
It’s official: 2023 was the hottest year on record. Yet the IEA predicts the world will reach peak carbon emissions before the end of this decade. Can both be true at the same time?
Here’s an infographic exploring the relationship between annual CO2 emissions, atmospheric CO2 concentration and global temperatures. Continue reading
Measuring Greenhouse Gas Emissions
A lot of numbers get tossed around in discussions about climate change. Degrees of warming, meters of sea level rise, square miles burnt or flooded, and most important, tons of greenhouse gases emitted. I like to know exactly what these … Continue reading
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