By Kevin Trenberth, National Center for Atmospheric Research and Reto Knutti, Eidgenössische Technische Hochschule (ETH) Zürich
Increasingly in the current U.S. administration and Congress, questions have been raised about the use of proper scientific methods and accusations have been made about using flawed approaches. 
This is especially the case with regard to climate science, as evidenced by the hearing of the House Committee on Science, Space and Technology, chaired by Lamar Smith, on March 29, 2017.
