claim: The Obama administration is "proposing to mine another 10 billion tons of Wyoming coal, which would unleash three times more carbon pollution than Obama's Clean Power Plan would even save through 2030."
evidence: Research published in 2009 found that overall the continent had become warmer since the 1950s, a finding consistent with the influence of man-made climate change: "We can't pin it down, but it certainly is consistent with the influence of greenhouse gases from fossil fuels", said NASA scientist Drew Shindell, another study co-author.