50 years after he helped start the US environmental movement by bringing 20 million people on the streets, Denis Hayes is urging US voters to prevent the 'worst president in US history' from being re-elected in November. Terry Slavin reports
As political leaders give in to a key demand of Extinction Rebellion, John Elkington of Volans explains how a platform of business leaders is now supporting the climate activist group
Author, adviser, thinker, speaker: John Elkington has worn a variety of hats during his 40-year career. Linking them all is a quiet yet irrepressible passion for positive change