41. Lily Cole, Actress and model selected Hazel Henderson, Futurist and evolutionary economist

“She has been writing and speaking for many years about the practical, philosophical and political ramifications of our economic system, offering an intelligent critique of the rules of our peculiar game (the social and environmental consequences),” said Lily. She added that “her work seems especially pertinent in light of the global economic crises, and perhaps offers space for optimism concerning other possible ways.”

42. Carolyn Porco, Planetary scientist selected Sam Harris, Author and neuroscientist

Harris's bold, full-throated criticism of God-belief, backed by an impressive knowledge of neuroscience, the contents of the "holy books", and the view of the world's religions and philosophies, have helped bring to fore the irrationality of belief in a supreme being.

43. Robin Chase, Founder, Buzzcar selected Ash Mahesh, Social technologist

Ash Mahesh is an astronomer who changed career to address problems as varied as traffic, public health and economic development. He combines politics, business, pragmatism and social vision in unlikely ways and produces scalable results that he then puts into open source.

44. Tina Rosenberg, Pulitzer prize-winning writer selected Srdja Popovic, Social activist

Srdja is the executive director of the Belgrade-based Center for NonViolent Action and Strategies (Canvas). He was one of the few students at Belgrade University who, in 1998, established Otpor ("resistance"), a political movement aimed at overthrowing Slobodan Milosevic. Otpor relied on street theatre and pranks instead of marches and speeches. Popovic now travels the world teaching these methods to other democracy activists.

45. June Cohen, Executive producer, TED Media selected Pattie Maes, Founder, MIT Fluid Interfaces Group

Pattie is one of the most original and influential thinkers exploring how humans and computers interact, and how machines can enhance human intelligence and experience.