Bangalore's lake of toxic foam – in pictures Posted by tangental on Thursday October 01, 2015 @09:54AM from the theguardian.com dept. http://www.theguardian.com/world/gallery/2015/oct/01/lake-toxic-foam-bangalore-india-in-pictures ( 1 comment | 2 points | on HN )
These sorts of foams were a thing in the late 70's in the US before phosphates were limited in detergents. When the conditions are right you get lots of foam like this.