Cleaning Up: Leadership in an Age of Climate Change
Once a week, Michael Liebreich and Baroness Bryony Worthington sit down with a leader in clean energy, mobility, climate finance or sustainable development. These in-depth interviews are illuminating and inspiring, and with a catalogue of nearly 200 episodes, there are few better guides to the net-zero transition.
Cleaning Up
We are a media and events platform dedicated to:
• Helping identify scalable climate solutions and exploring their challenges and trade-offs.
• Facilitating the creation of networks for action, bringing together different players and actors
• Amplifying the influence of those offering real solutions in order to accelerate their uptake.
Watch our latest episode on YouTube (or find it on your favourite podcast platform):
Recent Episodes
270
Aug. 12, 2026
AI Has An Electricity Problem | Ep270: Arshad Mansoor
Will AI break the grid? As hyperscalers race to build ever-larger data centres, electricity demand is soaring. The question is no longer whether power demand will grow, but by how much, how quickly, and whether the grid can deliver. This week, Michael Liebreich is joined by Arshad Mansoor, President & CEO of the Electric Power Research Institute (EPRI), one of the world's leading energy research organisations. Together, they tackle one of the biggest questions facing the global energy system:
Aug. 10, 2026
How Renewables Are Replacing Australia's Ageing Coal Fleet | Deep Dive Australia 07: Paul Simshauser
Australia has one of the world's fastest-moving electricity systems. It leads the world in rooftop solar, has deployed grid-scale batteries at extraordinary speed, and is now starting to replace its ageing coal fleet with cleaner sources of energy. But as renewable costs rise and electricity demand grows, can the transition remain affordable while maintaining a reliable power system? This week on Cleaning Up, Michael Liebreich is joined by Paul Simshauser, CEO of Iberdrola Australia, and one
269
Aug. 5, 2026
How Microbes Make and Break the World Around Us | Ep269: David Kirchman
Microbes rarely feature in discussions about climate change, yet they play a central role in regulating greenhouse gases through the Earth's carbon, methane and nitrogen cycles. As the climate changes, understanding these natural processes is becoming increasingly important to develop new approaches to clean energy, agriculture and emissions reduction. This week on Cleaning Up, Bryony Worthington speaks with Professor Emeritus David Kirchman of the University of Delaware, one of the world's l
Aug. 3, 2026
Why The Transition Hasn't Made Australians Rich Yet | Deep Dive Australia 06: David Pocock
David Pocock is one of Australia's most influential politicians, working as the Senator of the Australian Capital Territory. He brings a distinctive perspective to some of the country's biggest debates, from climate policy and energy security to democratic reform and the future of work. A former captain of the Australian rugby team, David entered politics after years of speaking out on issues including climate change, equality and environmental protection. Four years into his Senate career, h
268
July 29, 2026
The Crisis Forcing An Energy Revolution | Ep268: Jonathan Maxwell
The UK is heavily exposed to global energy markets and has some of the highest electricity prices in Europe. At the same time, vast amounts of heat generated across industry and infrastructure go unused. Whether it should be called "waste" is a matter of debate, but could making better use of the energy we already produce be one of the biggest untapped opportunities in the energy transition? This week, Michael Liebreich is joined by Jonathan Maxwell, founder and CEO of SDCL, a specialist inve
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