Dan Pierotti's wife Judy tells the story of the last few days and minutes of Dan's life.
Intelligent. Optimistic. Curious.
Audio
In 1969, Frederic Whitehurst was in Viet Nam, burning captured enemy documents. He saved the diary of a young woman, and many years later returned it to her mother.
Father Thomas Keating is considered by some people one of the world's greatest living mystics.
Aubrey de Grey has identified seven categories of molecular and cellular damage. He says if we can prevent or repair that damage, there's no reason why people can't go on living indefinitely.
Chris Turner is the author of “Planet Simpson: How A Carton Masterpiece Defined A Generation.”
When and how did American get so polarized? For answers, Jonathan Chait recommends reading "What Hath God Wrought," a history of American politics from 1815-1848 by the Pulitzer prize-winning historian Daniel Walker Howe.
Research and experiments on time travel being done by some of the world's leading theoretical physicists and David Toomey is here to tell us about it.
Carl Safina tells Jim Fleming about the leatherback turtle, which has been around for a hundred million years.
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