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There is only one sky and we must take care of it, for if it becomes sick, everything will come to an end.

"'People in the west live squeezed together, frenzied as wasps in the nest'". Interview with John Vidal, www.theguardian.com. December 30, 2014.
There is only one sky and we must take care of it, for if it becomes sick, everything will come to an end.