03/20/2017
"The March [for Science] 'presents … a very real, high-profile opportunity to call on our elected leaders to remember the role science plays in our society and to support scientific innovation and discovery, and the people and programs that make it possible,' wrote AGU CEO Chris McEntee."
http://www.sciencemag.org/news/2017/02/will-they-or-won-t-they-what-science-groups-are-saying-about-joining-march-science
American Chemical Society latest endorser, with conditions