This program describes the detective work and evidence for the generally accepted causes of two of the five mass extinctions, the KT and Permian. Then follows a diatribe on the speculation that human civilization may cause the sixth mass extinction.
Mass Extinction: Life at the Brink
This program describes the detective work and evidence for the generally accepted causes of two of the five mass extinctions, the KT and Permian. Then follows a diatribe on the speculation that human civilization may cause the sixth mass...
