This summer, festival-goers' urine is getting a second act as the secret ingredient in environmentally friendly beer, courtesy of climate scientists determined to make brewing even weirder. When science meets porta-potty, you know sustainability has gone full circle—cheers to the planet and questionable IPAs!

During Sweden’s Walpurgis Day in Uppsala, Sanitation360 deployed ten yellow Portaloos to collect 20,000 liters of “liquid gold,” turning festival pee into fertilizer for barley fields. The result? Green brewing that could soon headline the sustainable beer revolution.