U.S. Sens. Brian Schatz (D-Hawai‘i), Sheldon Whitehouse (D-R.I.), Elizabeth Warren (D-Mass.) and Edward J. Markey (D-Mass.) wrote to Education Secretary Betsy DeVos yesterday to highlight misleading science materials sent to more than 300,000 public school science teachers in Hawai‘i and across the country by a group with a long record of climate denial.

The Heartland Institute’s 11-minute DVD and 135-page book, which are made to look like typical curriculum materials for science teachers, are explicitly designed to call into question the scientific consensus on human-caused climate change.

Among other claims, they push teachers to “consider the possibility” that climate science is not settled and “students would be better served by letting them know a vibrant debate is taking place among scientists.”

“The Heartland Institute has disseminated ‘alternative facts’ and fake science at the behest of its industry funders for decades,” the Senators wrote. “In the 1990s, it teamed up with Phillip Morris to challenge facts about the health risks of tobacco. The tobacco industry’s conduct was found to be fraudulent. Using the same strategies, with funding from the Koch family foundations, ExxonMobil and other fossil fuel interests, the Heartland Institute now seeks to undermine the scientific consensus about climate change.”

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The Senators ask whether DeVos and her staff have had any contact with the Heartland Institute on science education. They also inquire as to whether the department is working with Heartland in any capacity. DeVos has a history of donating to industry-funded front groups and just last week applauded President Donald Trump’s decision to withdraw from the Paris Agreement on climate change.

“It is our sincere hope that neither White House staff nor Department of Education officials have turned to the Heartland Institute on the issues of climate change and climate science, or had any role in this mailing to educators,” wrote the Senators. “At your nomination hearing, you were asked whether you would stand on the side of students or with the political entities trying to force junk science into schools. You responded that you ‘support the teaching of great science and especially science that allows students to exercise critical thinking and to really discover and examine in new ways.’ We agree that ‘great science’ and critical thinking are cornerstones of a high-quality education, but that is not achieved with Heartland’s industry-funded and possibly fraudulent materials.”

Download a copy of the Senators’ letter.