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Debating How Alarmist to Be About Climate Change through 2021
Endangered Species 2016 through 2019
biological annihilation from the sixth mass extinction
web
web
http://www.pnas.org/content/early/2017/07/05/1704949114.abstract
author
Gerardo Ceballos, Paul R. Ehrlich
publication
PNAS
date
2017-05-23
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