Republicans' Climate Change Plan: Crickets

The presidential candidates don't seem to have one.

The silhouettes of emissions are seen rising from stacks of the Duke Energy Corp. Gibson Station power plant at dusk in Owensville, Indiana, U.S., on Thursday, July 23, 2015. Coal reclaimed its ranking as the top fuel for generating electricity at U.S. power plants in May, beating natural gas, which took the number one spot for the first time in April. Photographer: Luke Sharrett/Bloomberg via Getty Images

Photographer: Luke Sharrett
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Top Republican presidential candidates took turns attacking President Barack Obama's new Clean Power Plan unveiled Monday to combat climate change, dismissing the new rules to slash carbon emissions as "radical" or "irresponsible" or "a buzz saw on the nation's economy."

Missing from the crowded field of contenders were any alternate proposals to address the growing threat, which many Republicans doubt is linked to human activity despite overwhelming scientific consensus.