This Green Earth

Tuesday, 9-10 AM

Hosts Chris Cherniak and Nell Larson
Credit Mark Maziarz

This Green Earth is a weekly, hour-long program that focuses on the environment and environmentalism. Co-hosts Christopher Cherniak and Nell Larson explore the science, politics, economics and ethics behind the environment, natural resources, and sustainability.

The program includes interviews with local and national experts in the fields of water resources, air quality, environmental policy, fossil and renewable fuels, climate, conservation, ecosystems, agriculture, aquaculture, and sustainability.

TGE has interviewed a number of individuals from different environmental fields including: writers Andrew Revkin, Terry Tempest Williams, Craig Childs, Richard Louv and Paul Erlich; politicians like the Mayors of Park City and Salt Lake City; policy analysts from the Natural Resources Defense Council and the Environmental Defense Fund; scientists and researchers from the Monterey Bay Aquarium to the National Weather Service; and, local sustainable business owners from Copper Moose Farm, Main Street Olive Oil Company, Whole Foods Market, and Fairweather Natural Foods.

Christopher Cherniak is an environmental engineer with nearly 30 years experience as an environmental consultant. Nell Larson is an environmental scientist, educator, and a graduate of the Yale School of Forestry. Together, they direct This Green Earth's mission: to educate listeners about the importance of environmental preservation, conservation, and stewardship.

Contact Chris and Nell via email at

What People are Saying About This Green Earth

"This Green Earth offers an in-depth analysis of current environmental issues that affect our local and global community.  The conversations between the hosts and their guests is enlightening and challenging, but at the same time has a light touch that makes the issues accessible to a wide listening audience.  An invaluable resource for our community." Katy Wang, Executive Director of Park City Film

"This Green Earth does an excellent job recruiting knowledgeable and interesting guests.  As someone who's been involved in the "green" sector for many years, I'm consistently impressed with the ability of Katie and Nell to introduce me to something new!"  Tyler Paulsen, former Sustainability Office, Park City Municipal

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Ways to Connect

  In this episode of This Green Earth, Walt Meier, Senior Research Scientist with the National Snow and Ice Data Center is the guest.  The center provides updates on the growth and conditions of sea ice up in the Arctic and Walt talks about why the year 2020 saw a near record level of sea ice melt. 


In this episode of This Green Earth, Chris's guest is Nate Brown from Utah Birders. He talks about the 10th Annual Utah Birders - Park City Christmas Bird Count; it's origins and purpose, when it's held and how you can join in on the count Sunday January 3rd, 2021.

Dr. Miriam Goldstein, Director for Ocean Policy with the Center for American Progress, joins Chris and Nell on this week's This Green Earth to talk about the impacts that climate change is having on the physical, chemical and biological components of our oceans and the solutions we can adopt to mitigate this damage, particularly on a federal level.   


Last week, A federal judge overturned the Trump administration’s plan to lease more than 60,000 acres of public land for fracking in northern Utah’s Uintah Basin, including areas near Dinosaur National Monument.  The judge ruled that the Bureau of Land Management violated the law by refusing to consider alternatives to leasing all 59 parcels.  Taylor McKinnon, a senior campaigner at the Center for Biological Diversity joins Chris and Nell on this week's This Green Earth to talk about this decision and what the Biden administration

In this episode of  This Green Earth the guest is Emily Billow, a Park City native, who wrote, produced and directed a documentary about air pollution and environmental injustice.  In this case, the low income communities located amongst the Port of Long Beach, oil refineries and busy freeways.  Local residents have taken matters into their own hands, facing an apathetic government and powerful corporations in their fight for environmental justice.   Emily Billow talks about her Senior Thesis documentary at the USC Film School:  

In this episode of This Green Earth Nell and Chris talk with John Mecklin the editor in chief of the Bulletin of Atomic Scientists . He talks about the Doomsday clock and the roll that climate change plays in its calculation.

Last week the Department of the Interior completed it's efforts to effectively remove critical protections within the Migratory Bird Treaty Act, a 100 year old law that has protected thousands of bird species and millions of birds from human and industrial harm. Alison Holloran, the executive director of Audubon Rockies and Vice President of the National Audubon Society joins Chris and Nell on this week's This Green Earth, to talk about the MBTA, the removal of "incidental taking" and what the Biden administration might be able to do to prevent the proposed Trump changes from being enacted.

In this episode of This Green Earth Dr. Kimberly Warner, a senior scientist with Oceana talks about a report released last week, the non-profit research institution, Oceana, found evidence that nearly 1,800 animals from 40 different species of aquatic and bird life are ingesting plastic and becoming entangled in rope, nets and other material made of it.  An amazing 88% of these species are listed within the Endangered Species Act.  Dr.

In this episode of This Green Earth Jenny Rowland Shea, a senior policy analyst with the Center for American Progress, talks about the  leases now available in the Arctic National Wildlife Refuge.

In this episode of This Green Earth Jordan Clayton, Data Collection Officer with the NRCS talks about the  November Water and Climate Report.  The 2021 water year is off to a poor start in Utah’s Valley locations, with most basins recording no accumulated precipitation during the month of October.  In fact, almost 30% of the state is in the Exceptional Drought or worse category, according to the

In this episode of This Green Earth Sam Ricketts, Senior Fellow for Energy and Environment at the Center for American Progress talks about actions to combat the climate crisis. A new column by the Center for American Progress titled:  “State Climate Leadership Is Coming to the Nation’s Capital in 2021” shows how voters elected U.S. House of Representatives and U.S.

In this episode of This Green Earth Chris and Nell talk with  Janice Gardner  from the Wild Utah Project. The non-profit Wild Utah Project is once again hosting the Black Rosy-finch Project.  Rosy-finches are one of the least-studied birds in North America and Wild Utah is looking for volunteers to help count these birds during this upcoming winter. 

This episode of This Green Earth features Amaroq Weiss, Senior West Coast Wolf Advocate from the Center for Biological Diversity.

In this episode of This Green Earth, Matthew Bishop, an attorney with the Western Environmental Law Center talks about the Trump Administration's decision last week to not provide protection to wolverines under the Endangered Species Act.  Once numbering in the thousands, there are now fewer than 300 wolverines remaining in the contiguous U.S.  He'll explain why his group is filing a lawsuit against the administration's decision. 

In this episode of This Green Earth Chris and Nell are joined by environmental professor and Nobel Prize winner, Dr. Gary Yohe. Dr. Yohe talks about the influence climate change is having on the record-breaking wildfires occurring in Colorado and the Pacific West Coast.  Professor Yohe has been writing about Climate Change since the mid-80's so he'll also share how the predictions made back then are holding up almost four decades later.