Galápagos giant tortoises are fascinating--and endangered. They live only on the Galápagos Islands, a chain of volcanic islands in the Pacific Ocean off the coast of Ecuador. These tortoises face threats from the humans who live on--and visit--the islands, as well as from Earth's warming climate. Join author Kate Messner on an a journey to the Galápagos Islands to see these incredible creatures up close and discover how cutting-edge technology is helping scientists to study and protect them.