CBS Feb. 26, 2007
(Christian Science Monitor) This article was written by Peter N. Spotts.
For the next two years, the coldest places on Earth will become some of the hottest laboratories in the history of modern science. This Thursday marks the official start of the International Polar Year (IPY), an unprecedented research assault on Antarctica and the Arctic. Some 10,000 scientists from more than 60 countries launched the push because of significant changes they see taking place at these frozen ends of the Earth. Many hold that global warming is triggering these changes, including shrinking sea ice in the Arctic Ocean, thawing permafrost, and growing instability in Greenland's ice cap and in some floes coursing through Antarctica's ice cap. The U.S. kicks off its part of the $1.5-billion project with opening ceremonies Tuesday in Washington. The goal is to gain a deeper understanding of processes affecting everything from the flow of glaciers, and key features of polar climate to plankton and polar bears. In addition, researchers plan to leave a legacy of networked, standard sensors and buoys that will help track changes in these crucial regions long after the IPY ends. Why North And South Poles Matter At first glance, the poles may seem too remote to matter to anyone who doesn't live there. But Earth's "cryosphere" — its high-latitude regions of snow and ice — represents a central piece of the climate system. The poles act as sinks for the heat generated in the tropics and carried toward higher latitudes by the oceans ...full text