Spread the loveThe sight of fluffy white clouds drifting across a bright blue sky is one of nature’s most enduring images. However, few people realize that these seemingly weightless formations are ...

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 ...

In October 2008, Chris Bretherton lifted off from the coast of northern Chile in a C-130 turboprop plane. It was too dark to see the sandy hills of the Atacama Desert below, but the darkness suited ...