Sen. Ed Markey (D-MA) blasted President Donald Trump's new executive orders as "an attack on science" and a "declaration of war."

Speaking to MSNBC, Markey - who co-authored a 2009 House bill that would have established caps on U.S. carbon emissions - called out Trump for moving against President Barack Obama's efforts to curb climate change. 

Markey said the administration is declaring "war" on the Obama-era initiatives

"This is basically an attack on science, on climate, on the clean energy revolution which has been creating hundreds of thousands of new jobs because of Obama-era policies," said Markey, accusing Trump of "denying" climate change science.

Trump moved Tuesday to unravel energy regulations, targeting the Obama administration’s signature program - The Clean Power Plan - that was intended to curb carbon emissions.

"Together we are going to start a new energy revolution," said Trump. 

The president and Republicans have argued that Obama's policies, including restrictions on emissions at coal-fired power plants, were "job-killers."

Markey, however, accused the administration of refusing to accept the "catastrophic" situation when it comes to global warming and what must be done to deal with it. 

"[Trump] refuses to accept the reality that the planet is running a fever. There are no emergency rooms for planets," he said.

Watch the clip above.

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