Joe Roman dives deep into the critical role animals play in shaping our world, drawing from his book Eat Poop, Die: How Animals Make Our World. Discover how animals are essential to nature recovery and biodiversity, acting as key players in the nitrogen, phosphorus, and carbon cycles. Roman highlights fascinating examples, such as seabirds that helped create a thriving grassland ecosystem on a volcanic island in Iceland, and the important research on nutrient movement by feeding and fasting whales. As global wildlife populations face unprecedented threats, Roman emphasizes the importance of conservation efforts, rewilding native species, and restoring ancient nutrient pathways for healthier ecosystems.