'Republicans have found an ally in a climate scientist by the name of Judith Curry. Curry actually entered the public eye in 2005, with a paper in Science magazine warning that hurricanes were likely to become more intense as a result of climate change. But in the years since then, she’s soured on the scientific consensus about climate change. Her mantra now is, “We just don’t know.” “If all other things remain equal, it’s clear that adding more carbon dioxide to the atmosphere will warm the planet,” she told the committee. But, she went on, not all things are equal. She says there’s so much uncertainty about the role of natural variation in the climate that she doesn’t know what’s going to happen...“I’ve been trying to understand how there can be such a strong consensus, given these uncertainties,” she told the committee.