Robin Bates

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

Features some of the then-modern theories about dinosaurs and how they lived, from the appearance of early forms like Herrerasaurus, to the Tyrannosaurus and ceratopsians of the Late Cretaceous. Discusses the possibilities whether dinosaurs were active, warm-blooded animals, had parental care, were ancestors to birds, and what caused their extinction.

In 1986, astronomer turned computer scientist Clifford Stoll had just started working on a computer system at the Lawrence Berkeley Laboratory when he noticed a 75-cent discrepancy between the charges printed by two accounting programs responsible for charging people for machine use. Intrigued, he deduced that the system was being hacked, and he determined to find the culprit. This is the re-enactment of how he tracked down KGB cracker Markus Hess through the Ethernet to Hannover, Germany.