Exploring the history of water systems from Victorian sewers to modern super-sewers. Delving into the challenges of restoring river health and the impact of pollution. Discovering the power of water fleas in cleaning up wastewater and the importance of nature-based solutions for river restoration.

Experts Jeremy Werdell from NASA and Jaime Palter from Rhode Island University discuss the oceans' vital role in combating climate change. They explore the ocean's ability to absorb carbon dioxide, the challenges of enhancing its capacity, and the financial and ethical dilemmas in climate initiatives. The podcast also highlights the fascinating sounds of marine life and the importance of storytelling in connecting humanity with the oceans.

Exploring the challenges politicians face in honoring environmental promises, with insights from Sophie Howe, Tara Singh, and Professor Colin Davis. Discussing the impact of political backtracking on green investments, public willingness towards climate action, and the balance between economic growth and conservation. Delving into the importance of sustainable policies, accountability, and writing letters to future generations to support climate policies.

Professor Chris Thomas discusses the impact of alien invasive species on ecosystems, highlighting the need to reconsider our judgment towards them. The podcast explores efforts to protect red squirrels, combat earthworm invasions in forests, and preserve biodiversity on St Kilda Island. Conservationists share their experiences in managing invasive species, raising ethical questions on intervention and species adaptation in ecosystems.

Can wood replace concrete and steel in construction? Experts discuss the benefits of Cross-Laminated Timber and its potential for tall buildings. Debate on the environmental impact of using wood as a building material and the importance of sustainable forestry practices. Exploring biodiversity, Aboriginal land management, and the charismatic megafauna vs. invasive species debate.

Physicist Helen Czerski and guests explore the impact of waste on the environment. They discuss the potential to reduce greenhouse gas emissions by utilizing all resources, address the fashion industry's waste problem, and the challenge of tackling global waste management. They highlight the importance of innovative solutions and responsible consumption to combat the waste crisis.

Physicist Helen Czerski and journalist Tom Heap discuss rewilding efforts and balancing human needs with nature's preservation. They explore bison reintroduction impacts, agricultural conservation in North Norfolk coast, and the harmonious relationship between humans and the environment.

Journalist Tom Heap and physicist Helen Czerski discuss the urgency of addressing climate change and declining wildlife populations. They explore human impacts on nature and the need for a change in how we interact with the planet, emphasizing the role of individuals in shaping a sustainable future.