36. Lisa Randall, Physicist selected Zohar Komargodski, Scientist

“Komargodski has made several important contributions to developments in field theory. With Adam Schwimmer, he proved a result that had been conjectured for years about how a particular quantity changes with energy. He has also made developments in what are known as supersymmetric theories, proving exact results or coming up with new interpretations in what were thought to be well-trodden regimes,” said Lisa.

37. Nicholas D Kristof, Pulitzer Prize-winning journalist selected Chen Guangcheng, Human-rights activist

“I'd like lunch with Chen Guangcheng, an amazingly brave Chinese human-rights activist,” said Nicholas. A blind man who trained himself in law, and was exposed to a series of abuses and was jailed in retaliation. Security forces beat up those who approach his house, and allegedly tortured him when he smuggled out word of his situation."

38. Nicholas Christakis, Social scientist selected David G Rand, Lecturer, Harvard Biology Dept

David is doing brilliant research in biosocial science and is investigating the origins of human co-operation and is spearheading efforts to invent new ways to research social science online.

39. Jill Tarter, Astronomer selected Margaret Turnbull, Astrobiologist

“Maggie Turnbull has made the most detailed census of our immediate solar neighborhood to create a ‘finding’ list for the son-of-terrestrial-planet-finder and the discontinued Darwin study. And she's trying a grand experiment in freelance astrobiology from the woods of Wisconsin,” said Jill.

40. Nancy Lublin, CEO, DoSomething.org selected Adam Braun, Founder, Pencils of Promise

Pencils of Promise is a non-profit organization that builds schools in Laos and Guatemala. It raises all its money online from kids in $25 increments.