There are nearly twenty thousand species of them, they have been on Earth for hundreds of millions of years, and they play an indispensable role in many ecosystems. Yet lichens are usually overlooked. Ondřej Vavrečka decided to take a closer look at these fascinating organisms. His view, like the accompanying dialogue between experts Trevor Goward and Curtis Randall Björk, is both scientific and contemplative. For him, lichens represent not only a form but also a way of life. They show that an alternative to the constant expansion and reshaping of the environment can be the establishment of symbiotic communities in which every life has equal weight.

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