Revive and Restore is a California-based nonprofit that uses genetic engineering to help solve conservation problems, such as saving endangered species and increasing the biodiversity of ecosystems. To facilitate their solutions, Revive and Restore utilizes genetic engineering, which is the process of making changes to an organism’s DNA, or the set of instructions for how an organism develops and functions. One of their broad solutions is genetic rescue, which involves imbuing populations of endangered species with a wider variety of traits to make them more adaptable to a changing environment. Their other solution is de-extinction, which takes a more radical approach by attempting to recreate extinct species that performed important roles in their ecosystems. While scientists working with Revive and Restore have helped advance genome editing technology on a theoretical and technical level, their research has also prompted practical and ethical concerns over the extent of permissible human interference with nature, even when attempting to conserve it.