From weakening vehicle emissions to blocking warnings about how coastal parks could flood or the impact on the Arctic, the Trump administration is accused of muzzling climate science. Here six whistleblowers and former government scientists describe being sidelined by the administration – and why they won’t be quiet. Jeff Alson
Role: A former senior engineer at the Environmental Protection Agency (EPA)’s vehicles lab in Ann Arbor, Michigan
What did the work involve? “I was an engineer at the EPA, working for 40 years in a very technical job. In 2009, after the election of Barack Obama, the EPA started working on greenhouse gas standards for vehicles for the first time.