Unlike the stem cells of an adult human, the stem cells of an adult Hydra—a small freshwater invertebrate related to jellyfish and corals—are in a constant state of renewal, bestowing it with amazing regenerative capabilities and nearly biological immortality. Assistant Professor Celina Juliano, Department of Molecular and Cellular Biology, studies these amazing creatures. In the latest episode of The Stem Cell Podcast, she talks about her research and "mapping Hydra development."