Eleni Andreadis was born in London. She earned her Masters at Harvard University focusing on Environmental Policy and Media, and has consulted on sustainability issues for various companies, as well as presented, produced and consulted for channels and media organisations in the UK, US and Greece. She is the Director of Sustainability and CSR at Sani/Ikos Group and the creator of the award-winning Sani Green and Ikos Green programmes. Sani Resort is the first carbon neutral resort in Greece, powered by 100% renewable electricity, and was awarded the World’s Leading Luxury Green Resort at the World Travel Awards 2020, while Ikos Resorts has won international praise for its sustainability initiatives, including its zero-waste programme at Ikos Dassia in Corfu. Eleni is also the author of seven environmental books, including the best-selling Planet Agents book series, which has won the State Award for Children's Knowledge Book in Greece. Her books have been translated in numerous countries around the world, such as the US, China, Korea, Turkey, Egypt and the Middle East. Eleni is the founder of the non-profit organisation Planet Agents, which aims to empower children to take action on environmental issues, and a member of the Greek Leadership Council of the United Nations Sustainable Development Solutions Network.