RENEE MONTAGNE, HOST:
Good morning. I'm Renee Montagne. Even if you have been bored watching paint dry or grass grow or water boil, you have nothing on these scientists. An experiment that began in 1944 at Trinity College in Ireland just now has a definitive result - to test whether a thick substance called pitch flowed and dripped. A funnel with the stuff was placed over a jar. Seventy years later students saw a drip forming, set up a camera, and witnessed the drip drop. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.