Remains of historic Cape St George lighthouse in Booderee National Park, New South Wales (© Claver Carroll/Photolibrary/Getty Images)(Bing Australia)

Panda chewing on bamboo shoots, Chongqing Zoo, Chongqing, China (© Getty Images)(Bing Australia)

Strangler Fig tree in Bunya Mountains National Park, Queensland (© Ted Mead/Photolibrary/Getty Images)(Bing Australia)

A brittle star wanders across a blue sea star off the coast of the Solomon Islands (© Birgitte Wilms/Minden Pictures)(Bing Australia)

Tour de France riders (© Tim De Waele/Corbis)(Bing Australia)

Vulcano, Aeolian Islands, Italy (© SIME/eStock Photo)(Bing Australia)

Church of San Giovanni Battista, Mogno, Ticino, Switzerland (© LOOK/Latitude Stock)(Bing Australia)

Salt flats in San Francisco Bay, California (© Art Wolfe/Mint Images)(Bing Australia)

The Karl G. Jansky Very Large Array (VLA) radio telescope, west of Socorro, New Mexico (© Ilya Terentyev/Getty Images)(Bing Australia)

Red-legged seriema at the Apenheul Zoo in Apeldoorn, Netherlands (© Juan Carlos Muñoz/age fotostock)(Bing Australia)

Bark of a rainbow eucalyptus tree, Maui, Hawaii (© Daryl Pederson/plainpicture)(Bing Australia)

Sugar Loaf Mountain and Guanabara Bay, Rio de Janeiro, Brazil (© Bronek Kaminski/Getty Images)(Bing Australia)

Natchez Trace National Scenic Trail, Mississippi (© Marc Muench/Tandem Still + Motion)(Bing Australia)

Aizhai Suspension Bridge, Hunan Province, China (© Imaginechina/Corbis)(Bing Australia)

Aerial view of a flower farm, North Rhine-Westphalia, Germany (© Hans Blossey/Corbis)(Bing Australia)

Puss moth caterpillar (© Thomas Marent/Minden Pictures)(Bing Australia)

Yampa River flowing through Dinosaur National Monument, Colorado (© Whit Richardson/Aurora Photos)(Bing Australia)

Color-coded relief map of Linné Crater on the Moon (© NASA/GSFC/Arizona State University)(Bing Australia)

Candles line the beach at Odaiba Marine Park for Marine Day, Tokyo, Japan (© Keystone USA-ZUMA/Rex Features)(Bing Australia)

Pamukkale, Turkey (© Valery Shanin/Shutterstock)(Bing Australia)

Diver in the Silfra, Thingvellir Lake, Thingvellir National Park, Iceland (© Wild Wonders of Europe/Lundgren/Corbis)(Bing Australia)

Camel Rock at Narooma in New South Wales (© Jingshu Zhu/Moment/Getty Images)(Bing Australia)

Canals of Bruges, Belgium (© Domingo Leiva/Getty Images)(Bing Australia)

Tidal flats, Katmai National Park, Alaska (© plainpicture/Cultura)(Bing Australia)

Bathing boxes line the beach at Brighton, Victoria, Australia (© J C Mitchell/Getty Images)(Bing Australia)

Beaumont-Hamel Newfoundland Memorial, France (© Mary Evans Picture Library Ltd/age fotostock)(Bing Australia)

A Siberian tiger takes a swim at the Antwerp Zoo in Belgium (© Hans Kuczka/Aurora Photos)(Bing Australia)

Tolbachik volcanos on the Kamchatka Peninsula, Russia (© AirPano)(Bing Australia)

Wildflowers and stones at Egg Beach on Flinders Island, Tasmania (© Peter Walton Photography/Photolibrary/Getty Images)(Bing Australia)

Bowling Ball Beach near Point Arena, California (© Patrick Smith/Getty Images)(Bing Australia)