Scientific American: The Larsen B ice shelf on the Antarctic Peninsula–an area of ice larger than Rhode Island–collapsed as a result of climate change and now such global warming has been detected across Antarctica. Humanity’s impact on climate has been detected on every continent except Antarctica, or so said the United Nations Intergovernmental Panel on Climate Change (IPCC) in February 2007. No longer: scientists, comparing decades of records from 17 Antarctic weather stations with computer …