Gaithersburg Book Festival (2013) -- Sam Kean ("What's In Our DNA?"):
[1] KEAN_130518_013.JPG
[2] KEAN_130518_032.JPG
[3] KEAN_130518_044.JPG
[4] KEAN_130518_058.JPG
[5] KEAN_130518_064.JPG
[6] KEAN_130518_069.JPG
[7] KEAN_130518_096.JPG