The Fern That Cooled the Planet

SciShow
Over its lifetime, the Earth has seen plenty of climate change. About 50 million years ago the planet experienced extreme cooling, and all from a little fern.

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Sources:

The Foundation


http://www.scientificamerican.com/article/can-the-fern-that-cooled-the-planet-do-it-again/
http://link.springer.com/article/10.1007%2Fs00374-002-0452-x?LI=true
https://experiment.com/projects/azolla-a-little-fern-with-massive-green-potential
http://www.azollagenome.net/our-goals.html
http://ngm.nationalgeographic.com/ngm/0505/resources_geo.html
http://www.scientificamerican.com/article/how-scientists-uncovered-arctic-clues-to-a-past-where-a-tiny-fern-changed-the-planet/
http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4669.2009.00195.x/abstract

IMAGES: Azolla: https://commons.wikimedia.org/wiki/File:Azolla_caroliniana.jpg
https://commons.wikimedia.org/wiki/File:Azolla_caroliniana0.jpg
https://commons.wikimedia.org/wiki/File:Azolla_filiculoides_MUN.jpg

Anabaena: https://commons.wikimedia.org/wiki/File:Anabaena_circinalis_phv.jpg

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