How much does a cloud weigh? (video)

WASHINGTON, Sept. 6, 2019 — Imagine 300 midsize cars floating above your head –– that’s how much your average fluffy cloud weighs. So why doesn’t it come crashing down on you? This week on Reactions, we explore the chemistry behind how a cloud stays aloft in the sky, and how it got there in the first place: https://youtu.be/a2GvzsaOncE.

Reactions is a video series produced by the American Chemical Society and PBS Digital Studios. Subscribe to Reactions at http://bit.ly/ACSReactions and follow us on Twitter @ACSReactions.

The American Chemical Society, the world’s largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.