From a tiny shark tooth found in the Arctic to electronic tattoos that can monitor brain, heart and muscle activity, Neil Shubin joins us with a roundup of local scientific breakthroughs.

Ground Zero 360˚ at The Field Museum portrays the story of 9/11 from the unique perspectives of a New York City police commander and a photojournalist. Ash-har Quraishi gives us a sneak preview of the exhibit.