claim: We’re not sure because we don’t have enough data, for long enough, to separate signal from noise,” said Eric J. Steig, a scientist at the University of Washington who has studied temperature trends in Antarctica.
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.