Tackling Landfill Methane Emissions

Landfill photo credit: iStock

Tackling CH4 emissions from landfills (start time: 5:59) Methane is an extremely potent greenhouse gas, and its emissions have been rising recently in the U.S.  The largest source of methane emissions is oil and gas production, followed by livestock farming. The third largest source of methane emissions is landfills.  Food scraps, yard debris, paper and cardboard products and other carbon-based detritus that pile up in landfills release methane and other chemicals as they decompose in the soil. As part of the state’s goal of slashing greenhouse gas emissions, the Colorado Department of Public Health and Environment is developing new, and stricter, rules  that will require landfill operators to do more to monitor and capture methane emissions. KGNU host Susan Moran interviews Clay Clarke, director of the Climate Change Program at CDPHE; and Madison Hall, an associate with the Rocky Mountain Institute‘s US Program. For info on the Feb. 26 final public hearing on the  methane rule, click here.

Show Host/Producer: Susan Moran
Engineer: Jackie Sedley
Executive Producer: Beth Bennett
Headline Contributors: Beth Bennett, Joel Parker

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Decarbonizing Cement Production

Concrete mixer truck

Tackling Cement’s Huge Carbon Footprint (start time: 0:58)  It’s hard to imagine modern society without a key material that so many structures depend on–cement. Think of our houses, apartment and office buildings, hospitals, parking lots, bridges, and, increasingly,  massive data centers of big-tech companies. But that societal glue of sorts comes with a big climate price tag.  Cement production accounts for more than 7 percent of global greenhouse gas emissions. That’s way less than the amount from coal and oil & gas production, but  roughly double the emissions  from aviation. So, finding ways to reduce the carbon footprint of cement could go a long way toward curbing the momentum of climate change and its impacts. But some players in the industry, as well as in state and federal governments, are making strides to clean up the cement industry’s act.  In this week’s How On Earth, host Susan Moran interviews  Anish Tilak, a civil and environmental engineer who is a  a manager of the Carbon-Free Buildings program at RMI (founded as Rocky Mountain Institute); and Cory Waltrip, a senior manager at the startup Sublime Systems, in Somerville, Mass.

Host / Show Producer: Susan Moran
Engineer: Jackie Sedley
Executive Producer: Beth Bennett

Listen to the show here:

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