Famed neurologist Oliver Sacks joined award-winning journalist John Hockenberry to discuss Sacks’ latest book, which explores the bewitching and surreal world of hallucinations.

Professor Lee Berger is an award-winning researcher, explorer, author, palaeoanthropologist, and speaker. His explorations into human origins on the African continent, Asia, and Micronesia for the past two and a …

Sexuality and gender play a profound role in shaping identity, but for much of human history how they are determined has remained obscure. How does sexual orientation develop? What is it? Can it be changed?

New Orleans native Lisa P. Jackson is administrator of the Environmental Protection Agency (EPA). She is the first African-American to serve the post. She started her career working for the …

With ever more refined techniques for measuring complex brain activity, scientists are challenging the understanding of thought, memory and emotion–what we have traditionally called “the self.”

Evolutionary paleogeneticist Beth Shapiro travels to the cold reaches of the world to find DNA samples of long extinct animals, such as mastodons and saber-toothed tigers. She hopes to learn …