The podcast episodes discuss the critical role of the carbon cycle in the context of global climate change and the Earth's ecosystems.

Several episodes examine how the carbon cycle is being impacted by human activities, such as deforestation and the release of greenhouse gases, and how this in turn affects the ability of natural carbon sinks like the Amazon rainforest and permafrost to absorb and store carbon. Will the Amazon Help Save the Planet? and [Episode #195] - Permafrost and Climate 'Tipping Points' provide in-depth discussions on these topics.

The episodes also explore potential ways to mitigate climate change through better management of the carbon cycle, including carbon sequestration and nature-based solutions. Cleaning Up the Carbon Mess delves into the complexities and controversies around carbon offsets and alternative approaches.