The freakonomics of McDonalds vs. drugs | Steven Levitt

The paradox of choice | Barry Schwartz

Al Gore's Movie Banned in Seattle

Cenk's Travel to Memphis

NOW "Willie Nelson on Biodiesel" | PBS

NASA | THEMIS Mission

Analogy of the War and a Football Game

Senator Ted Kennedy Interview

Paul Hackett's Got a Gun

President Bush's Speech

An Election makes a Big Difference

Tony Snow Lying about Mission Accomplished

NATURE "The Best of NATURE -- 25 Years" | Exclusive | PBS

NATURE "The Best of NATURE -- 25 Years" | Preview | PBS

NOW | Carole King Tries to Protect Her Home | PBS

Do Schools Kill Creativity? | Sir Ken Robinson | TED Talks

Majora Carter: Greening the ghetto

Dean Ornish: The world's killer diet

Richard St. John: Secrets of success in 8 words, 3 minutes

NATURE "Chasing Big Cats" | Night Vision | PBS