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Republican leader: Climate change science ‘not known’

The role that human activity plays in climate change “is not known,” according to a Republican leader in the Senate.

Sen. John BarrassoJohn Anthony BarrassoOVERNIGHT ENERGY: Barrasso to seek top spot on Energy and Natural Resources Committee | Forest Service finalizes rule weakening environmental review of its projects | Biden to enlist Agriculture, Transportation agencies in climate fight Senate advances energy regulator nominees despite uncertainty of floor vote Barrasso to seek top spot on Energy and Natural Resources Committee MORE (Wyo.), who serves on the GOP leadership team, has lambasted the Obama administration’s efforts to curb carbon emissions.

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Asked if human activity contributes to climate change, Barrasso responded, “The climate is constantly changing. The role human activity plays is not known.”

In an interview taped for C-SPAN’s “Newsmakers” program, Barrasso said there is bipartisan opposition to the new regulations issued by the Environmental Protection Agency on climate change. He added the regulations will harm the economy and noted that a Democratic Congress couldn’t pass a cap-and-trade bill in 2009 and 2010.

Barrasso’s remarks come about a month after Sen. Marco RubioMarco Antonio RubioThe Hill's Morning Report - Presented by the UAE Embassy in Washington, DC - COVID-19 fears surround Thanksgiving holiday Rubio signals opposition to Biden Cabinet picks Democrats brush off calls for Biden to play hardball on Cabinet picks MORE (R-Fla.) attracted criticism for saying he doesn’t believe “human activity is causing these dramatic changes to our climate the way these scientists are portraying it.”

He later clarified those comments to say climate change is real while stressing he is against cap-and-trade solutions.

“Newsmakers” will air Sunday at 10 a.m. and 6 p.m. on C-SPAN.