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Last November, the Guardian environment columnist Bill McKibben made the grim prediction that the "damage from the US election would be measured in geologic time".

One hundred days and counting into Trump's presidency, there's little reason for optimism. The former CEO Of ExxonMobil is our secretary of state. The new head of the US Environmental Protection Agency wants to dismantle the agency. The Keystone pipeline has been revived, the clean power plan is in peril, and vast swaths of the Atlantic seaboard may be opened to offshore drilling.