More than 170 EPA employees put their names to the document, with about 100 more signing anonymously out of fear of retaliation, according to Jeremy Berg, a former editor-in-chief of Science magazine who is not an EPA employee but was among non-EPA scientists or academics to also sign. The latter figure includes 20 Nobel laureates.

Nearly 300 current and recently terminated employees of the U.S. Environmental Protection Agency published a declaration of dissent on Monday, outlining five major concerns about how the Trump administration's politicization of science and severe job cuts were undermining the agency's mission.

US President Donald Trump's administration is "ignoring the scientific consensus to benefit polluters," hundreds of Environmental Protection Agency employees said in a letter of dissent Monday, accusing the government of undermining the EPA's core mission.