- In Purple Pennsylvania, Older Climate Activists Tell Would-Be Voters, ‘We Caused It. We Can Solve It.’ | Under the watch of environmental warrior Bill McKibben, the ‘Silver Wave Tour’ is mobilizing fed-up senior citizens to canvas for climate votes in swing states. https://capitalandmain.com/in-purple-pennsylvania-older-climate-activists-tell-would-be-voters-we-caused-it-we-can-solve-it 6 comments climate