How much sea ice does a reindeer need to survive?

Arctic temperatures allegedly hit record high | MiamiHerald.com

Summer 2007 set a record low for sea ice in the Arctic, threatening reindeer, walruses and polar bears and opening shipping lanes above the Arctic Circle, the report said. This summer's ice melt was only slightly smaller.

"There has been a massive loss of sea ice starting in the 1990s," said one of the authors, James Overland, an Arctic expert at the Pacific Marine Environmental Laboratory in Seattle. "In 2008, we've lost so much multi-year old ice, it's very difficult for the ice cover to go back to where it was 20 years ago."