Merowe necropolis, Sudan -- Pepeira Tom/Photolibrary © (Bing Australia)

Common indoor/allergenic mold -- Dennis Kunkel microscopy, Inc./Visuals Unlimited © (Bing Australia)

New old bridge over river Neretva, Bosnia and Herzegovina -- Luke Agbaimoni/Getty Images © (Bing Australia)

Observation deck overlooking the limestone karst of the Stone Forest in Kunming, China -- Kelly-Mooney Photography/Corbis © (Bing Australia)

Opal mining area in Coober Pedy in the South Australian Outback -- Chris McLennan/Getty Images © (Bing Australia)

Fakarava Atoll in the Tuamotu Archipelago -- Sergio Pitamitz/Corbis © (Bing Australia)

Morocco spice market -- Walter Bibikow/DanitaDelimont © (Bing Australia)

Manta ray and scuba diver near the Socorro Islands, Mexico -- Franco Banfi/Photolibrary © (Bing Australia)

Lion Peak above Milford Sound, Fjordland National Park, New Zealand -- Chad Ehlers/Nordic Photos/Photolibrary © (Bing Australia)

Aerial view of the flower beds at Floriade flower festival in Canberra -- Tim Wimborne/Corbis © (Bing Australia)

Women carrying pots, Rajasthan, India -- Eric Meola/Getty Images © (Bing Australia)

Monarch butterflies migrating to Central Mexico -- Richard Ellis/Getty Images © (Bing Australia)

The Wave, a sandstone formation in the Coyote Buttes of the Vermilion Cliffs Wilderness Area, near the Arizona-Utah border -- Joseph Sohm/Corbis © (Bing Australia)

European Bee Eaters in Kiskunsag National Park, Hungary -- ARCO/age fotostock © (Bing Australia)

Illuminated bridge in the Karamay River Scenic Area in Karamay, Xinjiang Uygur Autonomous Region , China -- Zhou Jianling/Corbis © (Bing Australia)

Dutch replica of the ´Prins Willem´ -- Bjorn Svensson/age fotostock © (Bing Australia)

Hippo in the Grumeti River, Serengeti National Park, Tanzania -- Art Wolfe/Getty Images © (Bing Australia)

Black-headed seagulls populate an elaborately carved sand sculpture on a beach at Ocean City, Maryland -- Kevin Fleming/Corbis © (Bing Australia)

Travertine pools, Pamukkale,Turkey -- Kordcom Kordcom/Photolibrary © (Bing Australia)

Neptune Glows a Brilliant Blue in the Night Sky Seen by Voyager 2 -- NASA-JPL-Caltech - digital versi/Corbis © (Bing Australia)

Tour of Suisse cycling race passing through St. Gotthard Pass, Switzerland -- Tim De Waele/Corbis © (Bing Australia)

Melbourne Cricket Ground at Night --John Gollings/Arcaid/Corbis © (Bing Australia)

Swarovski Kristallwelten Museum , Wattens, Austria -- Riccardo Spila/Grand/Corbis © (Bing Australia)

Cows graze in a field near Cape Cornwall near St Just in Cornwall, England -- Matt Cardy/Getty Images © (Bing Australia)

Chilli peppers drying in the sun on the rice terraces of LongJi in Guangxi, China -- age fotostock/Superstock © (Bing Australia)

Oyster farm on Lemmens Inlet in Clayoquot Sound, Vancouver Island, British Columbia, Canada -- Chris Cheadle/All Canada Photos/age fotostock © (Bing Australia)

South Silver Falls State Park. Oregon, USA -- Craig Tuttle/age fotostock © (Bing Australia)