How does human-caused air pollution affect clouds and rainfall? Using @NASAEarth data, researchers found that smoky air makes it harder for some clouds to grow. Light pollution energizes the clouds growth, but extreme pollution actually shuts it down: https://www.nasa.gov/feature/jpl/nasa-study-untangles-smoke-pollution-effects-on-clouds/ https://twitter.com/NASA/status/1044740593992306692/photo/1 source: https://twitter.com/nasa/status/1044740593992306692