SUCH A HARD PLOT: The White House Rose Garden (L) was once famed for its soft lawn and vivid foliage — President Trump has had the iconic lawn paved over, replacing grass with concrete (R) Aaron Sachs is Professor of History at Cornell University. Speaking with Srijana Mitra Das at Times Evoke , Sachs — whose cats curled up on his shoulders through the conversation — discussed environmental justice, Donald Trump — and having a laugh:What is the core of your research? The most consistent issue I’ve focused on is environmental justice. I look at the overlap through a long...