Polar bear rolling on the frozen Beaufort Sea, near Point Barrow, Alaska (© Patrick J. Endres/Visuals Unlimited) © (Bing United States)

Painted backstreet of Dozza in the province of Bologna, Italy (© SIME/eStock Photos) © (Bing United States)

Aerial view of a dock in Martinique, France (© Guido Alberto Rossi/Axiom) © (Bing United States)

Ancient city of Bagan, Myanmar (© Philippe Body/Hemis/Corbis) © (Bing United States)

Green leaf mantis (© Norbert Wu/Corbis) © (Bing United States)

Skier making turns on a ridge near Valdez, Alaska (© Wink Inc./Footage Search) © (Bing United States)

Fairy basslet fish in blooms of lettuce coral near the Phoenix Islands, Kiribati, Micronesia (© Paul Nicklen/National Geographic/Getty Images) © (Bing United States)

Astronomical clock on the Zytglogge tower in Bern, Switzerland (© Blaine Harrington/age fotostock) © (Bing United States)

Female green ringtail possum with a joey in her pouch, Queensland, Australia (© Dave Watts/Visuals Unlimited, Inc.) © (Bing United States)

Encounter Restaurant in LAX International Airport, Los Angeles, California (© Tom Paiva/Getty Images) © (Bing United States)

Skeins of fabric hung out to dry in the dyers’ souk, Marrakech, Morocco (© Peter Adams Photography Ltd./Getty Images) © (Bing United States)

Great Horned Owl in Alberta, Canada (© Wayne Lynch/Corbis) © (Bing United States)

People fishing at sunset in Kerala, India (© Anders Blomqvist/Lonely Planet Images) © (Bing United States)

Reflection on Blue Lake, adjacent to St. Bathans, Central Otago, New Zealand (© Colin Monteath/age footstock) © (Bing United States)

Roof of the British Museum’s Great Court in London, England (© D.V.A./age footstock) © (Bing United States)

Martin Luther King, Jr. National Memorial in Washington, D.C. (© Mladen Antonov/Getty Images) © (Bing United States)

Fishing village of Reine, in the Lofoten Islands, Norway (© Frank Krahmer/Corbis) © (Bing United States)

A worker walks across the Luang Pu Thuad statue near Ayutthaya, Thailand (© Kozz Lig/Demotix/Corbis) © (Bing United States)

Revelstoke Dam, British Columbia, Canada (© Christopher Morris/Corbis) © (Bing United States)

King Penguin colony on South Georgia Island (© Frans Lanting/Corbis) © (Bing United States)

Frosted bearberry (uva-ursi) bush on the tundra in the Yukon, Canada (© Peter Van Rhijn/Corbis) © (Bing United States)

Umbrellas on a beach in Cape Town, South Africa (© Roger Wright/Getty Images) © (Bing United States)

Fireworks at Kek Lok Si Temple, Penang, Malaysia (© Tan Lian Hock/Asia RM/Age footstock) © (Bing United States)

Three alphorn players from the International Alphorn Society perform in Fort Kent, Maine (© Don Emmert/Getty Images) © (Bing United States)

Mantles of giant clams in Kingman Reef, Pacific Ocean (© Brian J. Skerry/Getty Images) © (Bing United States)

Stromatolites at dawn in Shark Bay, Western Australia (© Frans Lanting/Corbis) © (Bing United States)

Marjorie McNeely Conservatory at Como Park in St. Paul, Minnesota (© Joe Mamer/Age fotostock) © (Bing United States)

Interior of Marble Caves, General Carrera Lake, Chile (© Danita Delimont/Gallo Images/Getty Images) © (Bing United States)

Detail of a banana leaf, Mainau Island, Germany (© Egon Bömsch/Age fotostock) © (Bing United States)

Marismas del Odiel Biosphere Reserve, Huelva Province, Andalusia, Spain (© Martin Ruegner/Getty Images) © (Bing United States)

Aurora borealis over Vee Lake near Yellowknife, Canada (© Michael Ericsson/Getty Images) © (Bing United States)