Star gazing may be the most universal moments of wonder. Neil deGrasse Tyson says he's been awed by outer space since he first went to a planetarium. He's been hooked on science - and wonder - ever since.
You can also hear the extended interview with deGrasse Tyson here.
Ziauddin Sardar responds to the question "is there really a clash of civilizations?"
Tom Standage talks about his book, "Writing on the Wall: Social Media -- The First 2,000 Years."
Ruth Leitman directed a documentary film called “Lipstick and Dynamite: The First Ladies of Wrestling,” about the first female professional wrestlers.
Steve Lopez is the author of "The Soloist," a book about a homeless musician named Nathaniel Ayers. Lopez talks with Anne Strainchamps about how he found Ayers and what he learned from him.
Satish Kumar became a Jain monk at the age of nine. Now he's the editor of Resurgence magazine...
Stewart Brand, founder of the Whole Earth Catalogue, says it's time to get pragmatic about managing climate change.
Wangari Maathai won the Nobel Peace Prize in 2004. She is dedicated to re-foresting Africa and talks with Steve Paulson about some of her Greenbelt Movement projects. Her memoir is called "Unbowed."
