Olivia Rudgard | (TNS) Bloomberg News When Cathy Fulkerson walked into her bank in Reno, Nevada, she was ready to cancel her credit card. Carrying a letter stating her concerns, Fulkerson explained to the manager why she wanted to cut ties: its investments in fossil fuels. “The manager was very nervous and very confrontational, and I was a customer. I was shocked,” Fulkerson says — though she was also quite thrilled. “It was obviously very uncomfortable for him and obviously made a statement.” Fulkerson is no righteous 19-year-old. She’s never thrown soup at a painting or glued herself to a highway. The 67-year-old, who recently retired from a career in higher education, is part of Third Act, a U.S. group that gets older people involved in climate activism. Ever since Greta Thunberg burst onto the scene in 2018, climate protest has been seen as a primarily youthful pursuit. Not only do younger people have the chutzpah to storm public spaces and tussle with police, they are arguably the cohort most impacted by systems they had no part in creating. In 2050 — the global deadline for net zero and the point by