In this episode of Climate Debrief, host Angela Wheeler speaks with geologist Koen Vogel, Ph.D., about one of climate science’s biggest unanswered questions: What caused the massive ice sheets of the last Ice Age to melt?

Drawing on peer-reviewed research, Dr. Vogel examines the evidence behind CO₂, Milankovitch cycles, and other proposed explanations, highlighting why many popular theories struggle to explain the timing and scale of the deglaciation. The discussion explores abrupt climate shifts, ancient ice sheets, and the scientific challenges of reconstructing Earth's climatic past.

In this episode of Climate Debrief, Angela Wheeler speaks with Matthew Wielicki, Ph.D., about academic freedom, climate science, and the importance of open debate.

Dr. Wielicki shares how his family's experience fleeing communist Poland shaped his views on intellectual freedom. He discusses his departure from academia, concerns about climate anxiety among students, and what he sees as a growing disconnect between scientific findings and public narratives.

The conversation also examines competing interpretations of climate data, the role of media and institutions in shaping public perception, and the value of questioning assumptions in science.

Wielicki concludes by encouraging young people to focus on practical environmental stewardship, think critically, and remain optimistic about the future.

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Wallace Manheimer, PhD, provides a detailed critique of climate-related statements issued by major scientific societies in this discussion with Angela Wheeler.

The conversation examines global energy trends, historical climate data, and differing international perspectives on fossil fuel use.

Dr. Manheimer also addresses the scientific role of carbon dioxide and proposes changes to improve clarity and accuracy in institutional climate communications.

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Wallace Manheimer provides a detailed critique of climate-related statements issued by major scientific societies in this discussion with Angela Wheeler. The conversation examines global energy trends, historical climate data, and differing international perspectives on fossil fuel use. Manheimer also addresses the scientific role of carbon dioxide and proposes changes to improve clarity and accuracy in institutional climate communications.

In this episode of Climate Debrief, Angela Wheeler sits down with ecologist Jim Steele. They explore the concept of “zonerism”—the use of selective facts to draw misleading conclusions. Steele draws on decades of field research in the Sierra Nevada. He explains how local environmental changes matter. He also highlights natural climate cycles like El Niño and La Niña. He argues these often play a larger role than commonly portrayed. They discuss wet meadow restoration, bird population trends, wildfire patterns, and ocean dynamics. Steele challenges prevailing narratives. He emphasizes the importance of critical thinking in climate science.

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Website: co2coalition.org/
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In this episode of Climate Debrief, Angela Wheeler sits down with ecologist Jim Steele. They explore the concept of “zonerism”—the use of selective facts to draw misleading conclusions. Steele draws on decades of field research in the Sierra Nevada. He explains how local environmental changes matter. He also highlights natural climate cycles like El Niño and La Niña. He argues these often play a larger role than commonly portrayed. They discuss wet meadow restoration, bird population trends, wildfire patterns, and ocean dynamics. Steele challenges prevailing narratives. He emphasizes the importance of critical thinking in climate science.

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Website: co2coalition.org/
Facebook: facebook.com/TheCO2Coalition/
Instagram: / theco2coalition

Dr. Ganapathy Shanmugam joins Angela Wheeler on Climate Debrief and reflects on his journey from India to a long career in the energy industry. He explains the issues with closed peer-review, struggles with publishing his work, explaining the open-peer review system, and the failures of "green" energy projects. Drawing on decades of research, he examines fossil fuels, CO₂, and climate science. He also shares his perspective on energy development, environmental challenges, and ongoing scientific debates.

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Dr. Ganapathy Shanmugam joins Angela Wheeler on Climate Debrief and reflects on his journey from India to a long career in the energy industry. He defends Alex Epstiein's book Fossil Futures, Dr. William Happer's start as a scientist, the extent that crude oil has on our lives, what life would be like without oil-based products, the pressures of ESG on third-world countries, the effects of CO2 up to 10,000 parts per million, and the inaccuracies of modern climate models. Drawing on decades of research, he examines fossil fuels, CO₂, and climate science. He also shares his perspective on energy development, environmental challenges, and ongoing scientific debates.

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