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

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.

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

Neil Shubin

Penguins, ADHD, Tevatron & Leonardo da Vinci

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.