How to Be a Lichen: Adaptive Strategies for the Vulnerabilities of Being Human from Nature’s Tiny Titans of Tenacity

When I was a child, little delighted me more than the magical green garlands draping from the pine trees, which I made into wreaths and mustaches to roam the mountains of Bulgaria as a miniature Orlando. I had no idea that Usnea longissima is just one of more than 20,000 known species of lichen — almost twice as many as birds. In the lifetime since, I have collected and photographed lichen all over the world, from the spruces lining the wild shores of Alaska to the stone walls lining the rural roads of Ireland, from Basquiat’s grave in Brooklyn’s Green-Wood… read article