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  • 00:28
     
    #world warmed more than any human has ever seen   
    There was a time -- and not too long ago -- when the world warmed more than any human has ever seen.
  • 00:34
     
    #it ended much like it began: suddenly and mysteriously   
    This ancient warming took place over the course of just 200,000 years -- the blink of an eye in geologic time -- and it ended much like it began: suddenly and mysteriously.
  • 01:34
     
    #Paleocene-Eocene Thermal Maximum   
    This remarkable and sudden warming event is known as the Paleocene-Eocene Thermal Maximum, or PETM, and it had a massive effect on life on Earth.
  • 02:18
     
    #spike in carbon dioxide   
    Marine sediment samples from Maryland to Antarctica show that, about 56 million years ago, there was a sudden spike in carbon dioxide and other greenhouse gases in the oceans.
  • 04:33
     
    #PETM vs today carbon emission comparison   
    PETM vs today carbon emission comparison Now, compare that to the amount of carbon being released today.
  • 04:49
     
    #create a potent greenhouse effect   
    And it was more than enough to create a potent greenhouse effect.
  • 06:08
     
    #ocean acidification   
    But an even more devastating side effect of high CO2 levels was ocean acidification.

The Last Time the Globe Warmed

Imagine an enormous, lush rainforest teeming with life...in the Arctic. Well there was a time -- and not too long ago -- when the world warmed more than any human has ever seen. (So far) Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Special thanks to Nobumichi Tamura for allowing us to use his work: http://spinops.blogspot.com/ Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/ References: https://www.colorado.edu/today/2010/08/24/new-study-shows-how-tortoises-alligators-thrived-high-arctic-some-50-million-years-ago http://advances.sciencemag.org/content/3/3/e1600891.full http://geology.geoscienceworld.org/content/38/1/15.full?ijkey=Gz6vWfTZzGpv6&keytype=ref&siteid=gsgeology http://www.sciencedirect.com/science/article/pii/S0012821X15003994 http://science






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