The Shard, London (© Joe Daniel Price/Getty Images)(Bing United Kingdom)

Favites Coral polyps feeding at night and fluorescing when illuminated by ultraviolet light, Sabah, Borneo, Malaysia (© Louise Murray/Visuals Unlimited, Inc.)(Bing United Kingdom)

Reflection of City Hall, Stralsund, Germany (© Nico Stengert/Novarc/Corbis)(Bing United Kingdom)

Ice flows on Hudson Bay, Churchill, Manitoba (© Mike Grandmaison/All Canada Photos/SuperStock)(Bing United Kingdom)

Ice sculptures at Sapporo Winter Festival, Japan (© Shayne Hill Xtreme Visuals/Getty Images)(Bing United Kingdom)

Blue wildebeests on the Musabi Plains in the Serengeti National Park, Tanzania (© Adrian Bailey/Aurora)(Bing United Kingdom)

Iceberg Skating Palace, Sochi, Russia (© Lebedev Artur/Corbis)(Bing United Kingdom)

Kurobe dam, Kurobe Lake, Tateyama, Toyama, Japan (© JTB Photo Communications, Inc./age fotostock)(Bing United Kingdom)

The Beatles depicted on a metal gate on Penny Lane, Liverpool, England (© Chris Brink/SuperStock)(Bing United Kingdom)

The Engadin Skimarathon in Engadin, Switzerland (© Stephan Zirwes/Gallery Stock)(Bing United Kingdom)

Ice in Jökulsarlon, a glacier lagoon in southeast Iceland (© Matteo Colombo/Getty Images)(Bing United Kingdom)

Charles Darwin statue and Spring blossom Shrewsbury, Shropshire (© mikehaywardcollection.com/Alamy)(Bing United Kingdom)

Yellow-bellied marmot in Yellowstone National Park, Wyoming, USA (© George Sanker/Minden Pictures)(Bing United Kingdom)

Star horseshoe worm on a hump coral reef off the Solomon Islands (© Chris Newbert/Corbis)(Bing United Kingdom)

View of the Prismas Basálticos in Huasca de Ocampo, Hidalgo, Mexico (© Marcos Ferro/Aurora Photos)(Bing United Kingdom)

Harp seal pup at the Gulf of St. Lawrence, Canada (© Mitsuaki Iwago/Corbis)(Bing United Kingdom)

Stars arc over Lake Hallstatt, Austria (© Getty Images)(Bing United Kingdom)

Union Jack Guitar (© Martyn Goddard/Alamy)(Bing United Kingdom)

American white pelican in flight, Red River, Lockport, Manitoba, Canada (© Ken Gillespie/Corbis)(Bing United Kingdom)

Eve Muirhead of Great Britain looks on during the Bronze medal match between Switzerland and Great Britain on day 13 of the Sochi 2014 Winter Olympics at Ice Cube Curling Center on February 20, 2014 in Sochi, Russia (© Clive Mason/Getty Images)(Bing Unite

Backcountry skier near Mt. Baker Ski Area, North Cascades National Park, Washington, USA (© Jay Goodrich/Tandem Stock)(Bing United Kingdom)

Caucasus Mountains near Sochi, Russia (© David Trood/Getty Images)(Bing United Kingdom)

Lightning storm over Grand Canyon National Park, Arizona, USA (© Scott Stulberg/Corbis)(Bing United Kingdom)

Lucky Bay, Cape Le Grand National Park, Australia (© Ocean/Corbis)(Bing United Kingdom)

Weather station on Brocken peak, Saxony-Anhalt, Germany (© Günter Gräfenhain/Huber/4Corners)(Bing United Kingdom)

Wild dogs in Botswana (© Getty Images)(Bing United Kingdom)

Horsetail Fall at sunset seen from Taft Point, Yosemite National Park, California, USA (© Josh Miller/Aurora Photos)(Bing United Kingdom)