Diana Verde Nieto is the Chief Executive and co-founder of Positive Luxury, the company behind the Butterfly Mark, a trust mark awarded to luxury lifestyle brands that are investing in people and the planet. Positive Luxury evaluates, communicates and improves the sustainability reputation of brands, transforming the way they engage with consumers. Verde Nieto has helped Unilever, Coca-Cola and Nike, among other clients, with their sustainability programmes and was trained by Al Gore at the Alliance of Climate Protection. An entrepreneur, change-maker and author, she founded Clownfish in 2002, a pioneering global sustainability consultancy, which was sold to Aegis Media in 2008. Verde Nieto sits on the Advisory Board for the World Economic Forum's Young Global Leaders community and is a Member of the Forum's Global Agenda Council on Sustainable Consumption. She studied at the Harvard Kennedy School of Global Leadership and Public Policy.