Humans are leaving their mark on the world’s protected areas, study finds. About one-third of the world’s total protected area — around 6 million square kilometers (2.3 million square miles) — bears the scars of substantial degradation at the hands of humans - discu.eu

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Humans are leaving their mark on the world’s protected areas, study finds. About one-third of the world’s total protected area — around 6 million square kilometers (2.3 million square miles) — bears the scars of substantial degradation at the hands of humans http://science.sciencemag.org/content/360/6390/788 5 comments 17/5/2018 science