Horizon - 2002-2003
Series exploring topical scientific issues
Horizon - 2002-2003 - Revisited: Dawn of the Dinosaurs
An investigation into the theory that a comet was responsible for dinosaur extinction, followed by a look at the role of asteroid collisions in evolution.
Details
Horizon - 2002-2003 - The Day the Earth Nearly Died
250 million years ago during the Permian era, 95 percent of all life on Earth disappeared. The causes of this remained unknown until a recent discovery in Greenland helped unlock the mystery.
Details