Sharp rise globally in the dirtiest fossil fuel investments reverses progress made after the Paris agreement, with tar sands holdings more than doubling in Trump’s first year in officeBank holdings in “extreme” fossil fuels skyrocketed globally to $115bn during Donald Trump’s first year as US president, with holdings in tar sands oil more than doubling, a new report has found.A sharp flight from fossil fuels investments after the Paris agreement was reversed last year with a return to energy sources dubbed “extreme” because of their contribution to global emissions.