Stewart Brand is president of The Long Now Foundation and co-founder of Revive & Restore

Black Activist. Data Scientist & Policy Analyst. Campaign Zero.

Failed grade school spy. Writer. Editor. Instagram: @annaholmes. November avatar by @beyerstein in honor of the just-released @bookofjezebel.

Rabbi Shmuley whom Newsweek & Wash Post call ''the most famous Rabbi in America'' is a world-renowned author of 31 books, broadcaster & relationships expert.

Born and raised in Iran, Marjan fled the country as a teenager. She advocates for human rights in Iran through Alliance for Rights of All Minorities (ARAM).

I am an actor among other things. I co-created SoulPancake and Lidè Haiti.

Dir. of @HutchinsCenter, African & African American Research & Alphonse Fletcher University Professor, @Harvard. #FindingYourRoots returns to @PBS on Oct. 3rd.

Chef & food activist, fishing fanatic, father to three