1 videodisc (60 minutes) :sound, colour ;4 3/4 inches
Originally broadcast on television in 2014.
Narrated by Jeffrey Wright.
It's a mystery on a global scale: five times in Earth's past, life has been nearly extinguished, the vast majority of plants and animals annihilated in a geologic instant. What triggered these dramatic events? And what might they tell us about the fate of our world? Joins scientists around the globe as they unravel the mysteries of two of the most dramatic mass extinction.
E.
DVD; widescreen presentation; Dolby Digital 5.1.
For private home use only.
English dialogue; English subtitles for the deaf and hard of hearing.
1.Dinosaurs--Extinction.2.Documentary television programs.3.Mass extinctions.4.Science television programs.Dynamic Details