Harvey Alston

Educator, Author of "Be the Best", Motivational Expert

Graham Allison

Founding Dean of JFK School, Nuclear Security Expert, US-China Relations Analyst

Sherman Alexie

Poet, Short Story Writer, Novelist, and Performer

Buzz Aldrin

Former Fighter Pilot & 2nd Man to Walk on the Moon; Author

Alan Alda

Actor; Writer; Science Advocate; Director

Alan Alda On Why Communication Is So Important To Science ...

Tadatoshi Akiba

Former Mayor of Hiroshima, Japan; Mathematician & Politician

Na'im Akbar

Noted Afrocentric Author & Psychologist

Tania Aebi

Solo Circumnavigator, Bestselling Author, Sailing Educator

Carol Adelman

Carol Adelman is a senior fellow and director of Hudson's Center for Science in Public Policy, specializing in international development, foreign aid, trade and global health.

Melvin Adams

Former Harlem Globetrotter with a Passion for Reaching America’s Youth

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Marc Abrahams

Creator of Ig Nobel Prize, Editor of Annals of Improbable Research, Author