Carbon is a key element of life, we are carbon creatures. Carbon is LIFE, to regulate or restrict it means regulating and restricting you, your life and activity. . Just as winter slows down life, living, and restricts activities, so will net zero. Learn about carbon and ask your friends if they know just how important carbon is to their existence ? PC Wear shirts are a great way to start that conversation and to let people know just how important this is.