Of all the worlds studied by JPL, the quest to understand how Earth is changing touches us most directly. Although we have made major advances in understanding our home planet, it often seems as if we are still just scratching the surface. How high will the seas rise? How available will water be in the future? How are carbon storage and biodiversity changing? How can we better prepare for extreme events like earthquakes and volcanoes? Such questions, and others, will continue to drive JPL to innovate novel ways to observe how Earth responds to both natural and human-induced changes, and will provide actionable results for research, education, and decision- making.