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Wonder Materials: Bryan Guido Hassin of DexMat

April 28, 2026

Copper and steel were pivotal to the industrial revolution. But these days, it’s clear that continued reliance on these substances as our key building materials has devastating environmental implications, including habitat destruction from open-pit mining, water toxification from acid mine drainage, and air pollution from sulfur dioxide emissions. Fortunately there’s an emerging array of cutting-edge materials that hold promise for eco-conscious developers. A company named DexMat ...

Ann Carlson: How Los Angeles Cleaned Up Its Air

April 21, 2026

For decades, Republicans have been echoing the same mantra, that “government is not the solution, it’s the problem.” And for the most part, when the GOP is in power, this aphorism sadly rings all too true. This week on Sea Change Radio, we speak with Ann E. Carlson, an environmental law professor and former head of the National Highway Traffic Safety Administration about her new book, Smog and Sunshine: The Surprising Story of How Los Angeles Cleaned Up Its Air. We discuss the sou...

Hannah Murnen of Graphyte on the Quest to Remove Carbon

April 14, 2026

Most of us aren’t aware of just how much carbon dioxide is emitted from biomass waste such as sawdust, forest thinnings, and agricultural residuals but woody biomass energy production emits roughly double the carbon pollution per unit of electricity of coal, and 4.5 times that of gas. This week on Sea Change Radio, we speak to Hannah Murnen, the Chief Technology Officer at a carbon dioxide removal startup known as Graphyte to learn more about the company and the industry as a whole. We discus...