Origins of Biodiversity

Historical Analysis: Past Extinctions

Impact of Human Evolution on Biodiversity

Modern Extinctions and their Causes

Impact of Climate Change on Species

Ocean Acidification and Its Impacts

Humans as an Invasive Species

Future Predictions: The Sixth Extinction

The Role of Conservation

Conclusions: A Lesson for Humanity

The Sixth Extinction: An Unnatural History, written by Elizabeth Kolbert, provides an understanding of the current global environmental crisis. It delves into the past five extinction events on Earth, and argues scientifically that humans may be causing the sixth.