Endangered Species and Mass Extinction

• The Five Worst Mass Extinctions in Earth's History
• The Sixth Extinction by Niles Eldredge
• Permian-Triassic Extinction
• Current Mass Extinction
• Current Extinction- 6 degrees scenario
• New Scientist: Endangered Species (Instant Expert)
• What Causes Mass Extinctions?
• The Sixth Extinction
• Mass Extinction is Underway
• Audio Resources: Amphibian Population Declines
• Audio Resources: Radio Expeditions: Listening to Elephants
• Audio Resources: White House May Delist Protected Species (A time-compressed version is here)
• Endangered Species Act: Species Listed
• More Stuff is Here
• IUCN Redlist of Endagered Species
• Rethinking What Caused the Last Mass Extinction
• Double Trouble: What really killed the dinosaurs
• Species Extinctions Could Reduce Plant Productivity by Half
• Extinction
• Mass Extinction Tied to Past Climate Change