"ADHD Does Not Exist" & Cook County Issues Same-Sex Marriage Licenses

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We share what you had to say about our conversation with ADHD Doesn't Exist author Dr. Richard Saul and the ruling to expedite same-sex marraige licenses when we read some of our viewer feedback.

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We meet the Chicago doctor who claims in a provocative new book that ADHD does not exist. Read a book excerpt.

Penguins, ADHD, Tevatron & Leonardo da Vinci

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Neil Shubin

Sniffing out relatives? It may not be the human way, but it works for one finely dressed bird. We explore penguin behavior and more in tonight's Scientific Chicago.