NASA has been studying how our Earth is changing by looking at the air, oceans, land, ice, and snow and how they affect the weather and climate. Through their Earth Science Enterprise program, NASA uses special satellites and tools to closely watch and understand Earth's systems. The researchers focus on things like clouds, water cycles, oceans, atmosphere chemistry, land processes, glaciers, and the solid Earth. They found that by studying these areas, they can get a better grasp of how everything on Earth is connected and how our planet is changing over time.