Clouds are one of the main unknowns in understanding how climate might change in the future. Low clouds reflect sunlight back to space, cooling the planet, while high clouds trap heat near the surface, warming things up. Because of their temporary nature, they are hard to model adequately in global climate models, leading to uncertainty in future climate projections. NASA’s Climate division has a great quiz which tests your knowledge of how clouds affect climate. You can find it at https://climate.nasa.gov/quizzes/CloudsAerosols-quiz/
