The Halls of Extinction | Cosmos: A Spacetime Odyssey

[Music]
welcome halls of extinction monument
broken branches Tree of Life for every
single one of the millions of species
alive today perhaps a thousand others
have perished most of them died out in
everyday competition with other
life-forms but many of them were swept
away vast cataclysms overwhelmed the
planet in the last 500 million years
this has happened five times by mass
extinctions the devastated life owner
worst one of all happened some 250
million years ago at the end of an era
known as the Permian
you