Photographer, director, early environmental activist Yann Arthus-Bertrand paradoxically spent part of his career in planes and helicopters.
Today, this 76-year-old white-moustached pioneer does without air travel, no longer eats meat and has a boundless admiration for the young Swedish activist Greta Thunberg.
He does not believe that COP27 is enough to save us from a more difficult future, but calls on everyone to ask themselves what they can do for the planet.
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