Scientists mobilise against 'fear of facts' in age of Trump
21 April 2017 Last updated at 23:02 BST
Climate change, pollution, medicine - scientists are learning even if you ignore politics, politics won't ignore you. Now many men and women in the sciences are mobilising to make their concerns heard.
Produced by Nada Tawfik and Olivia Lace-Evans
Edited by Olivia Lace-Evans.