Puffins (© Nicram Sabod/Shutterstock)(Bing United Kingdom)

White Pocket in the Vermilion Cliffs National Monument, Arizona (© Harun Mehmedinovic/Tandem Stills + Motion)(Bing United Kingdom)

Reflection on the lake at Bergpark Wilhelmshöhe in Kassel, Germany (© Chinch Gryniewicz/plainpicture)(Bing United Kingdom)

Rannoch Moor, Scotland (© Jason Friend/Loop Images/Superstock)(Bing United Kingdom)

Massive selenite crystals in the Cave of the Crystals in Naica, Mexico (© Carsten Peter/Getty Images)(Bing United Kingdom)

Opening ceremony of the 1896 Olympic Games in Panathinaiko Stadium, Athens, Greece (© Eye Ubiquitous/UIG/Getty Images)(Bing United Kingdom)

Sunrise at Pura Ulun Danu Bratan temple in Bali, Indonesia (© Rat007/Shutterstock)(Bing United Kingdom)

Long-tailed glossy starlings (© FuYi Chen/500px)(Bing United Kingdom)

Riders and horses compete at Aintree Racecourse (© Shaun Botterill/Getty Images)(Bing United Kingdom)

Coffee sprouts in Costa Rica (© Istvan Kadar Photography/Getty Images)(Bing United Kingdom)

Cave on the Jordanian shore of the Dead Sea near Zara Spring (© George Steinmetz/Corbis)(Bing United Kingdom)

Composite satellite image of the Ugab River in Namibia (© NASA)(Bing United Kingdom)

The Singing Ringing Tree Panopticon over Burnley (© Alan Novelli/Alamy)(Bing United Kingdom)

Gare Saint-Lazare Train Station, Paris, France (© Hal Bergman/Getty Images)(Bing United Kingdom)

A snorkeller in the Mediterranean Sea at Cabo de Gata-Níjar Natural Park in Spain (© David Santiago Garcia/Aurora Photos)(Bing United Kingdom)

Friendship Square in Dalian, China (© Rob Whitworth/Getty Images)(Bing United Kingdom)

Fishing docks on the Sado Estuary, near Comporta, Portugal (© Francesco Carovillano/Tandem Stills + Motion)(Bing United Kingdom)

A road winding through Cheddar Gorge, Somerset (© SIME/eStock Photo)(Bing United Kingdom)

Western gull chick in Channel Islands National Park, California (© George H.H. Huey/Alamy)(Bing United Kingdom)

A group of joggers run across the Humber Bay Arch Bridge in Toronto, Canada (© Mark Blinch/REUTERS)(Bing United Kingdom)

Putty Beach in New South Wales, Australia (© Steve Daggar Photography/Moment/Getty Images)(Bing United Kingdom)

Bloom of microscopic phytoplankton scattered across the surface of the Black Sea (© NASA/Corbis)(Bing United Kingdom)

Kilauea erupting, Hawai’i Volcanoes National Park (© Art Wolfe/Getty Images)(Bing United Kingdom)

Oasis town of Taghit, Algeria (© George Steinmetz/Corbis)(Bing United Kingdom)

Sunlight reflecting on rice paddy terraces, Yuanyang County, China (© Eastphoto/age fotostock)(Bing United Kingdom)

Common kestrel hunting for rodents (© Bertie Gregory/Corbis)(Bing United Kingdom)

Oak tree canopy in Roudsea Wood, Cumbria (© Chris Mattison/Minden Pictures)(Bing United Kingdom)

Cirrus clouds over Guadalupe Mountains National Park, Texas (© Viktor Posnov/Getty Images)(Bing United Kingdom)