May 2013

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A flame goby guards her eggs in the Kaafu Atoll of The Maldives (© Scubazoo) 2013-05-30.jpg

A lake in Jotunheimen National Park, Norway (© Minden Pictures) 2013-05-17.jpg

Aerial view of glacial ice on the River Thjorsa (Þjórsá) in southern Iceland (© Getty Images) 2013-05-28.jpg

Aerial view of the Great Barrier Reef, Queensland, Australia (© Getty Images) 2013-05-16.jpg

Anhumas Abyss cave near Bonito, Mato Grosso do Sul, Brazil (© 360cities.net) 2013-05-13.jpg

Arial view of Gardens by the Bay and the Super Trees, Singapore City, Singapore (© eStock Photo - SIME) 2013-05-02.jpg

Bloom of moon jellyfish swimming at night in Prince William Sound, Alaska (© Minden Pictures) 2013-05-21.jpg

Brooklyn Bridge and Manhattan skyline, New York City, New York (© Alamy) 2013-05-24.jpg

City of Jaén in Andalucia, Spain (© Alamy) 2013-05-22.jpg

Close-up of a blue agave plant (© Paulson Photography - Superstock) 2013-05-05.jpg

Detail of a steam engine at Steamtown National Historic Site, Scranton, Pennsylvania (© Aurora Photos) 2013-05-11.jpg

Green sea turtle being cleaned by reef fish off the Kona Coast, Big Island, Hawaii (© Aurora Photos) 2013-05-23.jpg

Hang Son Doong, Phong Nha Ke Bang National Park, Vietnam (© Getty Images) 2013-05-27.jpg

Highland cattle in a field of heather on the Isle of Skye, Scotland (© Corbis) 2013-05-07.jpg

Lady Musgrave Island coral atoll in Capricorn-Bunker group, Great Barrier Reef Marine Park, World Heritage Site, Queensland, Australia (© Superstock) 2013-05-20.jpg

Lake Wolfgangsee and the town of St. Wolfgang in Salzkammergut, Austria (© GT Image - Getty Images) 2013-05-31.jpg

Lattice architectural detail in the concourse at King‘s Cross train station, London, England (© Gallery Stock) 2013-05-03.jpg

Mercury (© NASA) 2013-05-04.jpg

Milky Way above Crater Lake, Oregon (© Bing) 2013-05-01.jpg

Ounianga Serir Lakes in northern Chad (© Corbis) 2013-05-25.jpg

Pelicans in flight, near Bandon, Oregon (© Corbis) 2013-05-10.jpg

Plaza de la Paz with the Basilica de Nuestra Senora de Guanajuato in background, Guanajuato, Mexico (© Alamy) 2013-05-15.jpg

Polar Bear mother and cubs near Hudson Bay, Canada (© Corbis) 2013-05-12.jpg

Roque de los Muchachos Observatory on La Palma in the Canary Islands, Spain (© Getty Images) 2013-05-08.jpg

Singapore’s business district (© Bing) 2013-05-26.jpg

Tadpoles in Cedar Lake, near Campbell River on Vancouver Island, British Columbia (© Eiko Jones Photography) 2013-05-09.jpg

Tassili N'Ajjer National Park in the Sahara, Algeria (© Corbis) 2013-05-06.jpg

The Malecon, Havana, Cuba (© Superstock) 2013-05-14.jpg

The Mount Everest Base Camp at Khumbu, Nepal (© Tandem Stock) 2013-05-29.jpg

Wedge Pond and Mt. Kidd, Kananaskis Country, (at sunrise August 2001), Peter Lougheed Provincial Park, Alberta, Canada (© Photodisc - Getty Images) 2013-05-18.jpg

Whale Rock at Tidal River, Wilsons Promontory National Park, Victoria, Australia, Australasia (© Lonely Planet Images - Getty Images) 2013-05-19.jpg

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