• Deepak Chopra - The mind-body healing pioneer discusses his journey from growing up in post-war India to learning about Ayurvedic medicine, to his current work promoting spiritual knowledge and working for world peace. 
• Jane Goodall - The renowned scientist and conservationist tells of the people who have inspired her in her work to pretect animals, and the reasons she has for hope in the future. 
• Franny Armstrong - The McLibel filmmaker writes about her politicisation as a teenager, her involvement with the Greenpeace movement and the next steps in the fight against climate change. 
• Bob Brown - The Australian Green politician shares stories from his time as an ecologist and lawmaker, and his belief in how democracy can be used to bring people together to fight the looming crises facing Planet Earth. 
• Tim Flannery - The explorer and ecologist tells of watching the ecosystems around him disappear, his travels to remote areas around the world and how the only hope for our future lies in connecting with others to act together. 
• Polly Higgins -The late environmental lawyer discusses how the concept of Earth Law, and how she came to fight for ecocide to be recognised as a crime against humanity.
• Caroline Lucas - England's only Green MP, Lucas writes about how she has fought all her life to change the political system, and how radical change is always possible! 
• Bill McKibben - The writer and activist discusses moving from writing to political campaigning, and how he founded 350.org, the global grass-roots organization that works to halt and reverse climate change. 
• Carlo Petrini - The slow food advocate tells of growing up in Piedmont, and of how we can change the world by putting food back at the centre of our lives. 
• Vandana Shiva - The ecofeminist discusses how the multiple crises which she has fought – climate change, misogyny and inequality – are all interlinked, and how our response must be similarly all-encompassing.

A former Jain monk, Satish Kumar is an international peace and environment activist and the long-standing editor of the highly respected Resurgence magazine. In 1962 he hit the headlines and gained international respect when he walked for peace to London, Moscow, Washington, and Paris. He is a regular speaker on the international circuit and was the founder of the Schumacher College—which educates its students in eco consciousness and the means for effective change.