Are we living through a mass extinction? This week, Rosie looks into mass extinction events and how they have shaped our planet. In our SNPit, Ash discusses the psychology of organised monkey crime.

Episode Sources:

• Billions of years ago, the rise of oxygen in Earth’s atmosphere caused a worldwide deep freeze
• Poisoned Planet: The Great Oxygenation Event
• New Theory For What Caused Earth's Second-Largest Mass Extinction
• Metal-induced malformations in early Palaeozoic plankton are harbingers of mass extinction
• Familiar Culprit May Have Caused Mysterious Mass Extinction
• The Devonian Extinction Saw the Oceans Choke to Death
• On impact and volcanism across the Cretaceous-Paleogene boundary
• Here's What Happened the Day the Dinosaurs Died
• Dino-Killing Asteroid Hit Just the Right Spot to Trigger Extinction
• The Earth's Sixth Mass Extinction Is Accelerating
• Earth Is Not in the Midst of a Sixth Mass Extinction
• Bali’s thieving monkeys can spot high-value items to ransom

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Music:

AhDah Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/