Our laboratory has been studying synesthesia for eight years. In that time, we've tested thousands of synesthetes of all varieties, gathered the DNA from 8 synesthetic family trees, and performed neuroimaging. We value the opportunity to explain our research to a wider audience, and to that end our research has appeared in several popular outlets.
Here are some print articles about our synesthesia research:
What Flavor Is Your Rainbow? - Dr. Kiki's Science Hour, August 2010
Why I and O are dull for synaesthetes - New Scientist, Nov 2007
Finding the Gene that Makes People Hear Shapes and Taste Words - UT Houston Medicine, May 2006
Synesthesia: Hearing Sounds and Seeing Colors - Houston Chronicle
The Most Beautiful Painting You've Ever Heard - Seed Magazine, Dec 2006
Want to know how neuroscience will force major changes in our criminal justice system? Read David's article The Brain on Trial in The Atlantic. Now anthologized in 2012 Best American Science and Nature Writing.

Listen to David discussing Sum -- and actor Jeffrey Tambor reading stories from the book -- on WNYC's Radiolab.
Listen to British rocker Jarvis Cocker read the story "Descent of Species" from Sum. He is one of the dozens of terrific voices who read for the audio book.