The Happy Planet Index is the first global measure of sustainable well-being which envisions a future where good lives don't have to cost the earth.
[4][5] He has been featured in publications including the Wall Street Journal,[6] The Guardian,[7][8] Wired UK,[9][10] and The Huffington Post.
[11] He was voted one of the Top 10 original thinkers in 2011 by Director Magazine and listed on Forbes 7 Most Powerful Ideas in 2011.
[12] Marks's work has led to him being invited to speak, train and host workshops at conferences and events around the world as well as closer to home in London.
Marks promotes a number of "Big Ideas" about the role of happiness in multiple aspects of our lives:[14]