Four magnificent minds from Einstein's Garden come together for a big green chat. Climate scientist Professor Mary Gagen often gets asked, what can individuals do to help the planet? She wades through the politics of pollution, to talk about how to make environmental decisions without being overwhelmed. Hannah Bland is from Possible, a charity that exists to engage people in climate action with a can-do attitude and infectious optimism for a cleaner, fairer future. Kofi and Arthur are some of the clever folk on the team at UCell, who provide the hydrogen cell power for the Omni Tent in Einstein's Garden. UCell lift the lid on the science behind complex green technologies, from batteries and fuel cells to supercapacitors and solar wind power.