Grappling with the Anthropocene: Scientists identify safe limits for human impacts on planet. The Earth has nine biophysical thresholds beyond which it cannot be pushed without disastrous consequences — and we have already moved past three of these tipping points. Comparing and graphing nine environmental threats, researchers find unexpected evils. E. Colin Ruggero on Radical Green Populism: Climate change, social change and the power of everyday practices. Overcoming inertia on climate change is unlikely to take place through the time-honored methods of hectoring and lecturing; perhaps a little salesmanship and psychology is called for. Here's the bottom line: The claim that climate legislation will kill the economy deserves the same disdain as the claim that global warming is a hoax. Framing those who push for

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