Slow relaxation and landscape-driven dynamics in viscous ripening foams

Proceedings of the National Academy of Sciences, Volume 122, Issue 47, November 2025. SignificanceFoams, like those in soap suds, shaving cream, or emulsions, can flow slowly and take a long time to recover after being squeezed or stirred. Scientists have long thought this sluggish behavior came from bubbles getting stuck in stable, jammed …