Artist Rachel Sussman has traveled to all seven continents in her tireless quest to document millennia-old lichen, moss, bacteria, trees, shrubs, and even underground forests. Her book, The Oldest Living Things in the World, gathers 30 of these specimens into one gorgeous volume.
What's the oldest living thing you've ever seen? A 2,200-year-old sequoia in California, perhaps? That's a relatively teenage specimen to the artist Rachel Sussman, who has spent the last ten years looping the globe on a wild adventure to meet and document the world's oldest "continuously living" organisms.