Nearly a century after Capt. Robert Falcon Scott explored the southern continent, experts are working to save the British explorer's wooden hut (pictured on Ross Island, Antarctica, in August 2006) and three others in the area from slipping under the snow forever. The sanctuary measures 50 feet (15 meters) long and 25 feet (7.6 meters) wide and was built to house up to 33 men. Scott and his crew stayed at the hut before their ill-fated Terra Nova expedition to the South Pole in January 1912. Scott and four others died after being beaten to the pole by Norwegian explorer...