Earth: Our Model for Exoplanet Research

NASA has a record of Earth observations going back more than 50 years. What might be in store for the next 50 years? In this finale of our Earth series, we hear from two scientists helping to chart the course of NASA Earth science. There are still many unanswered questions about our home planet. As the only planet that we know to have life, studying Earth is also crucial as NASA searches for other habitable worlds.