When completed, the Crazy Horse mountain carving will be 641 feet long by 563 feet high. Matthew Staver /Landov hide caption

itoggle caption Matthew Staver /Landov

Peace Pilgrim near Topeka, Kan., in the late 1970s. She had walked 25,000 miles by 1964, and continued for almost two more decades. She carried only a pen, a comb, a toothbrush and a map. James B. Burton/Courtesy of Friends Of Peace Pilgrim hide caption

itoggle caption James B. Burton/Courtesy of Friends Of Peace Pilgrim

Waves crash over the Kulluk oil rig, which washed aground on Sitkalidak Island, Alaska. Officials say aircraft have not spotted any signs of a fuel leak from the rig, which reportedly does not contain crude oil. PA3 Jon Klingenberg/Coast Guard hide caption

itoggle caption PA3 Jon Klingenberg/Coast Guard

Some of The Salt's most popular posts of 2012 included coffee, pink slime and Downton Abbey. Daniel Acker/Landov; Carnival Film & Television Limited 2011/Masterpiece; Adam Cole/NPR; Robyn Mackenzie/iStockphoto.com; Lass/Getty Images hide caption

itoggle caption Daniel Acker/Landov; Carnival Film & Television Limited 2011/Masterpiece; Adam Cole/NPR; Robyn Mackenzie/iStockphoto.com; Lass/Getty Images

President Barack Obama and Vice President Joe Biden make a statement regarding the passage of the fiscal cliff bill in the Brady Press Briefing Room at the White House late Tuesday evening. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Chad Griffin, president of the Human Rights Campaign, based in Washington, D.C. Dave Anderson/Oxford American magazine hide caption

itoggle caption Dave Anderson/Oxford American magazine

Solar panels come off the line at SunPower's solar manufacturing plant near San Jose, Calif. Lauren Sommer for NPR hide caption

itoggle caption Lauren Sommer for NPR