Abstract

The emergence of de‐extinction is a study in technological optimism. What has already been accomplished in recovering ancient genomes, recreating them, and reproducing animals with engineered genomes is amazing but also has a long ways to go to achieve “de‐extinction” as most people would understand that term. Still, with some caveats in place, creating a functional replacement for an extinct species may sometimes be doable, and given the right goals, might sometimes make sense. The International Union for Conservation of Nature guidelines for de‐extinction do a reasonable job of keeping the caveats in place and clarifying the goals. In fact, given the right caveats about what de‐extinction can accomplish, we should pay a lot of attention to the technology and should think carefully about the goals. Not only has the technology been advancing, but our environmental standards have been getting looser and more flexible, providing less guidance for implementing the technology. The guiding ideals for conservation are often explained as a choice between John Muir, founder of The Sierra Club, and Gifford Pinchot, who helped create the U.S. Forest Service. Muir argued for preserving some places in the world in their natural state because of their great value and beauty. Pinchot, by contrast, was bluntly utilitarian. He argued for trying to keep some natural places more or less undamaged so that we could use them later. There has long been dissatisfaction with this choice, and in the last couple of decades, a number of prominent voices have proposed a “gardening ethic” as a new standard that combines elements of Muir and Pinchot. A gardening ethic is supposed to both celebrate the land and declare that it must now be managed. But what would good gardening mean when it comes to de‐extinction?