Largest known mass extinction

Permian - Triassic Mayhem: Earth's Largest Mass Extinction
Royal Tyrrell Museum Spealer Series 2013 Beniot Beauchamp, Ph.D. - University of Calgary Permian - Triassic Mayhem: Lead-up, Catastrophe and Aftermath of the...
The Sixth Extinction - Elizabeth Kolbert on How Humans Are Causing Largest Die Off
February 2014 on Democracy Now! In the history of the planet, there have been five known mass extinction events. The last came 65 million years ago, when an ...
The Siberian Traps and the Volcanic Mass Extinction Theory (Full Documentary)
The Siberian Traps and the Volcanic Mass Extinction Theory (Full Documentary) . 2013 This documentary as well as the rest of these documentaries shown here r...
Mass Extinctions
Hank takes us on a trip through time to revisit the 5 major mass extinction events that have impacted species over the Earth's history, and leaves us with so...
The Sixth Extinction: Elizabeth Kolbert on How Humans Are Causing Largest Die Off Since Dinosaur Age
In the history of the planet, there have been five known mass extinction events. The last came 65 million years ago, when an asteroid about half the size of ...
Ordovician Extinction [4]: 7 worst days on Planet Earth
The Ordovician--Silurian extinction event, the Ordovician extinction, was the second-largest of the five major extinction events in Earth's history in terms ...
Could Siberian volcanism have caused the Earth's largest extinction event?
Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known speci...
The Permian Extinction (Majernik, Green, and Kinsala) .dv
The Permian Extinction is the largest known mass extinction event in Earth's history. This video explores the causes behind the Permian Extinction and lays o...
Dinosaur Species Discovered That Might Have Survived Mass Extinction
Discoveries of dinosaur fossils have recently increased, and a new species is being named more frequently than every two weeks. Archaeologists working in Arg...
Study says Earth on brink of mass extinction event
Subscribe: http://smarturl.it/reuterssubscribe June 18 - A landmark study by an international group of scientists has concluded that planet Earth is on the b...