Clouds need two essential ingredients to form, and both must be present simultaneously for the process to begin. There are two ingredients needed for clouds to form: water and nuclei. The first ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why does some rain fall harder than other rain?

Atmospheric aerosol particles are essential for the formation of clouds and precipitation, thereby influencing the Earth's energy budget, water cycle, and climate. However, the origin of aerosol ...