2012 Iditarod winner Dallas Seavey's team climbs a hill. Seavy has guest riders on his sled for the ceremonial start of the race. Frank Kovalchek/Flickr hide caption

itoggle caption Frank Kovalchek/Flickr

A bald eagle in flight. The Northern Arapaho Tribe in Wyoming has won an unprecedented permit to hunt two bald eagles for use in religious ceremonies. iStockphoto.com hide caption

itoggle caption iStockphoto.com

This giant squid was caught about 10 miles off the shores of Oahu, Hawaii, in 1981. The pupil of its eye measured more than 3.5 inches across. Current Biology hide caption

itoggle caption Current Biology