This manifesto published recently at Grist seeks to rewrite the climate activist playbook. Why do I feel it's the prelude to a larger internecine struggle within the environmental movement? Because there's this growing belief among environmentalists that reversing the buildup of greenhouse gases is beyond our collective political, policy, and technical means. Forget about re-framing the global warming message, Adam D. Sacks, writes. It's high time environmentalists "tell the truth" about humanity's culturally malignant illness: