A NEWBrew beer, made with treated wastewater, is displayed at the COP29 U.N. Climate Summit, Friday, Nov. 15, 2024, in Baku, Azerbaijan. (AP Photo/Peter Dejong)

Nick Chow, part of the COP29 Singapore Pavilion team, poses for a photo with NEWBrew, beer made with treated wastewater, during the COP29 U.N. Climate Summit, Friday, Nov. 15, 2024, in Baku, Azerbaijan. (AP Photo/Peter Dejong)

Nick Chow, part of the COP29 Singapore Pavilion team, poses for a photo with NEWBrew, beer made with treated wastewater, during the COP29 U.N. Climate Summit, Friday, Nov. 15, 2024, in Baku, Azerbaijan. (AP Photo/Peter Dejong)