President Trump in the oval office / CNN

In the final weeks of his administration, President Obama made some important progress on the climate and environment. Unfortunately, much of that forward momentum is expected to be undone as the Trump administration, with its focus on rolling back environmental regulations and expanding fossil fuel extraction, begins to implement its policies. In his fourth day in office, President Trump has signed an order to revisit President Obama’s decision on Keystone XL, now allowing the 1,110-mile pipeline — which would transfer oil from the highly-polluting tar sands in Alberta, Canada, down to the Gulf of Mexico — to possibly move forward, along with the Dakota Access pipeline, the source of major protests among Native Americans. His administration also removed content on climate change from the White House website. Amid a profound shift in focus, scientists have found that 2016 was the hottest recorded…