Nice and slick, which makes my signature tag more and more relevant every minute...
Using film since before it was hip.
"One of the most singular characters of the hyposulphites, is the property their solutions possess of dissolving muriate of silver and retaining it in considerable quantity in permanent solution" — Sir John Frederick William Herschel, "On the Hyposulphurous Acid and its Compounds." The Edinburgh Philosophical Journal, Vol. 1 (8 Jan. 1819): 8-29. p. 11
Unless I am doing something wrong this video(what's it called?) does not appear to be available in the U.K. The link provided takes me to the International CNN- nothing there I can see- but based on the thread I assumed it was U.S. so clicked on this and nothing there either that refers to film.