- Examines the theory that a large asteroid colliding with the Earth created climate changes which disrupted the dinosaurs' food chain and lead to their ultimate disappearance.
- Item content: English
- Cinematographer, Peter Hoving ; narrator, Bill Mason.
- Originally broadcast on the television program Nova.
VHS SP mode.
- 1 videocassette (57 min.) : sound, color ; 1/2 in.
- polyester; 1/2 in.; polychrome
- analog; magnetic; mono
- VHS; NTSC
- MV 147