Hawaii Volcanoes National Park, Hawaii (© Grant Ordelheide/Tandem Stills + Motion)(Bing United States)
Aerial view of the Washington Monument in Washington, DC (© NASA Photo/Alamy)(Bing United States)
A humpback whale off the coast of Maui in Hawaii (© Design Pics/Danita Delimont)(Bing United States)
Swift fox pups in Grasslands National Park near Val Marie in Saskatchewan, Canada (© John E Marriott/age fotostock)(Bing United States)
Kayaker exploring sandstone sea caves in Apostle Islands National Lakeshore near Bayfield, Wisconsin (© Chuck Haney/Danita Delimont)(Bing United States)
White storks at Los Barruecos Natural Monument, Cáceres, Spain (© Wild Wonders of Europe/Widstrand/Minden Pictures)(Bing United States)
Cape Neddick Light in York, Maine (© Haizhan Zheng/Getty Images)(Bing United States)
Male leopard in Linyanti Wildlife Reserve, Botswana (© Karine Aigner/Tandem Stills + Motion)(Bing United States)
The Supertree Grove in Singapore's Gardens by the Bay (© John Warburton-Lee/Danita Delimont)(Bing United States)
Seville, Spain’s Guadalquivir River and Triana Bridge for the 500th anniversary of Magellan’s departure (© Zu Sanchez Photography/Getty Images)(Bing United States)
A thunderstorm rolls across Theodore Roosevelt National Park in North Dakota (© Judith Zimmerman/Danita Delimont)(Bing United States)
Elephants in Amboseli National Park, Kenya (© Adam Bannister/Offset)(Bing United States)
Mars Express image of the icy cap at Mars’ south pole (© ESA/DLR/FU Berlin/Bill Dunford)(Bing United States)
Male and female Ecuadorian horned anoles in Mindo, Ecuador (© James Christensen/Minden Pictures)(Bing United States)
Smögen, Sweden (© Martin Wahlborg/Getty Images Plus)(Bing United States)
Yukon River viewed from the Midnight Dome, Dawson City, Yukon, Canada (© Robert Postma/Getty Images)(Bing United States)
Bees for National Honey Bee Day (© Angela Parker/Offset)(Bing United States)
Tidal pools of Leça da Palmeira, Portugal (© Fernando Guerra/age fotostock)(Bing United States)
Replica of the Wright Flyer undergoing aerodynamic tests at NASA's Langley Research Center, Virginia (© Chuck Thomas/Science Photo Library)(Bing United States)
Muje-Oulu Lake in eastern Finland (© Topi Ylä-Mononen/plainpicture)(Bing United States)
Wildebeest herd crossing the Mara River between Kenya and Tanzania (© zhengvision/Getty Images)(Bing United States)
The Dubai Fountain in Burj Lake, taken from the Burj Khalifa in Dubai, United Arab Emirates (© Eli Asenova/Getty Images)(Bing United States)
Farmland in Washington state's Palouse region (© Art Wolfe/Getty Images)(Bing United States)
Brown bears in Katmai National Park and Preserve, Alaska (© imageBROKER/SuperStock)(Bing United States)
Satellite image of the Burning Man festival in Black Rock City, Nevada (© DigitalGlobe/ScapeWare3d/Getty Images)(Bing United States)
Royal Albert Hall during the annual BBC Proms festival in London (© Oli Scarff/Getty Images)(Bing United States)
Anak Krakatoa volcano erupting off the coast of Sumatra, Indonesia (© Martin Rietze/Alamy)(Bing United States)
The Garden of the Palazzo Corsini al Prato in Florence, Italy, for the New Generation Festival (© Will Perrett/Alamy)(Bing United States)
Asbury Park in New Jersey (© Patrick Morisson/Alamy)(Bing United States)
Hardee County Fair in Wauchula, Florida (© Oscar G. Davila/Getty Images)(Bing United States)
Slacklining between giant boulders in Bishop, California (© Evgeny Vasenev/Aurora Photos)(Bing United States)