The News
Study shows Arctic ice still disappearing
BOULDER, Colo., April 5 (UPI) -- A team of U.S. scientists has determined the maximum extent of Arctic sea ice the past winter was the second lowest on satellite record.
The University of Colorado-Boulder researchers said the extent of the Arctic ocean covered by at least 15 percent ice was 5.7 million square miles in March, slightly higher than the record low of 5.6 million square miles measured in March 2006.
The declining sea ice has been blamed on higher winter temperatures in the Arctic, which are believed to be a result of increasing levels of greenhouse gases in the atmosphere and strong natural variability in the ice, said researcher Walt Meier of CU-Boulder's National Snow and Ice Data Center

The Research
Read the research behind this story in the journal Science.