Agence France-Presse: Antarctica, which seemed to have largely escaped the global warming heating up the rest of the planet, is melting too, according to a study. The new research, published in the journal Nature Geoscience, also provides the firmest proof to date that climate change at both poles is not the result of natural fluctuations. “Our results demonstrate that human activities have already caused significant warming in both polar regions,” said Alexey Karpechko, a professor at the …