The Prince of Wales is the Heir to the British Throne. He is a lifelong environmentalist, one of the world's foremost charitable entrepreneurs and an organic farmer. Among the many environmental initiatives set up by His Royal Highness is the International Sustainability Unit, which was established in 2010 to facilitate consensus on how to resolve some of the key environmental challenges facing the world, specifically those to do with food security, ecosystem resilience and the depletion of Natural Capital.