Biodiversity is the variety of living species on Earth and the ecosystems they form. We need biodiversity for many critical functions of our lives as humans. From food production to medicine to clean air and water, biodiversity plays a crucial role in sustaining human populations across the globe. So, how does this relate to extinction? What happens to an ecosystem when a species goes extinct? When will the next mass extinction occur? Can we bring back a species from extinction? Join Leah Gerber as she walks us through these topics and describes reasons for hope in sustaining life on our planet in a series of curated videos produced in partnership with EdPlus as part of their Learn with Me initiative. Gerber is a professor in the School of Life Sciences and founding director of the Center for Biodiversity Outcomes.