An astronaut performing a space walk outside of the International Space Station -- StockTrek/Superstock © (Bing United States)
Clouded Leopard lying in a tree -- Penny Adams/Photolibrary © (Bing United States)
Oberbaumbruecke bridge between the districts of Kreuzberg and Friedrichshain, Berlin, Germany -- Christian Reister/Photolibrary © (Bing United States)
The Great Serpent Mound, a pre-historic effigy mound, along Ohio Brush Creek in Ohio -- Tom Till/Superstock © (Bing United States)
The Baths of Lady Maria de Padilla at the Alcázar of Seville royal palace, Seville, Spain -- SIME/eStock Photo © (Bing United States)
Western Crowned Pigeon -- Mark Newman/Photolibrary © (Bing United States)
Scanning electron microscope image of Penicillium Notatum , the fungus that is the source of the antibiotic Penicillin -- Visuals Unlimited/Corbis © (Bing United States)
Chicago, Illinois skyline at night -- Anjan Hegde/Getty Images © (Bing United States)
The Triumphal Arch at Palmyra, Syria -- DEA/Photolibrary © (Bing United States)
The boats of the Barcolana Regatta near the Faro della Vittoria (Victory lighthouse), Trieste, Italy -- Grand Tour/Corbis © (Bing United States)
Close-up of Brazil agate quartz -- Albert Copley/Corbis © (Bing United States)
The Brandenburg Gate stands illuminated during the Festival of Lights in Berlin, Germany -- Andreas Rentz/Getty Images © (Bing United States)
Camden, Maine in the autumn -- Imagestate/Tips Images © (Bing United States)
Black-breasted Pipefish, St. Johns Reefs in the Red Sea off the coast of Egypt -- Wolfgang Poelzer/Photolibrary © (Bing United States)
Hochkönig mountain and meadow, Salzburg state, Austria -- Dietrich Rose/Corbis © (Bing United States)
Terraced fields of wheat climb the slopes of a small volcano near the Virunga Mountains in Rwanda -- George Steinmetz/Corbis © (Bing United States)
A head of Medusa used as the base of a column in the Yerebatan Cistern (Basilica Cistern), Istanbul, Turkey -- David Sutherland/Corbis © (Bing United States)
The Icebreaker I/B Kapitan Khlebnikov moving through the pack ice in Antarctica -- Frank Lukasseck/Corbis © (Bing United States)
The peaks of the San Juan Mountains, part of the Rocky Mountains, rise above a beaver pond in southwest Colorado -- Phil Nelson/Photolibrary © (Bing United States)
Vineyards and winding roads in the Kaiserstuhl region of Germany -- Andreas Wonisch/Getty Images © (Bing United States)
Elevated view over colorful buildings in a new residential area of Kiev, Ukraine -- Gavin Hellier/Corbis © (Bing United States)
Seven Mile Bridge, Florida -- Hiroyuki Matsumoto/Corbis © (Bing United States)
Sperm Whale off the coast of the Azores, Portugal -- Franco Banfi/Photolibrary © (Bing United States)
Climbers in three portaledges with mosquito netting camp in trees on the California Coast near Elk, California -- Louie Psihoyos/Corbis © (Bing United States)
Lake Um el Ma and the Erg Ubari sand dune in the Sahara Desert, Libya -- Radius Images/Photolibrary © (Bing United States)
Detail of the Statue of Liberty showing the torch, flame, face, crown, robe and hand holding the tablet -- Harald Sund/Getty Images © (Bing United States)
Brown (Grizzly) Bear catching spawning salmon from a stream at Kinak Bay, Katmai National Park and Preserve, Alaska -- Paul Souders/Corbis © (Bing United States)
Lake Langisjor, Iceland -- Hans Strand/Corbis © (Bing United States)
Spooky graveyard -- Colin Anderson/Getty Images © (Bing United States)
