Is Global Warming Melting Antarctica's Ice?

Although researchers have known for decades that climate change is causing some ice to melt in Antarctica, the reasons behind these changes have been a hot-button issue in scientific, environmentalist and political circles.

But recent evidence suggests that global warming is behind the meltdown.

"It is very likely that this is a result of global climate change," said Erin Pettit of the Department of Geology and Geophysics at the University of Alaska Fairbanks. "From a number of different data sets, including ice cores, we know that the temperatures in the Antarctic Peninsula and the western half of the Antarctic Continent have been warming over the last several decades faster than in the past.

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