It’s been a week of big changes — and turmoil — at the Environmental Protection Agency. First, President Trump ordered a freeze on EPA grants and contracts and barred anyone at the agency from communicating with the public. Then, in a stance which flies in the face of the agency’s current scientific integrity policy, a White House official announced that EPA research may be subject to review by the administration. Seriously, you keeping up? So to get some perspective on it all, we reached out to Christine Todd Whitman, former head of the EPA under George W. Bush.