Life at the BrinkDVD - 2015
Follows scientists around the globe as they unravel the mysteries of two of the most dramatic mass extinctions: the "K/T Extinction" that wiped out the dinosaurs, and "The Great Dying," which obliterated nearly 90% of all Earth's species.
Alternative Title: Life at the brink
Publisher: [Arlington, Va.] : PBS Distribution, 
Branch Call Number: 576.84
Characteristics: video file,DVD video 1 videodisc (50 min.) : sound, color ; 4 3/4 in.