Plumeria flowers in Hawaii (© Darrell Gulin/Getty Images)(Bing United States)

Anechoic chamber, Copenhagen, Denmark (© Alastair Philip Wiper/Science Photo Library)(Bing United States)

Hot springs on Mount Roraima, Venezuela (© Waldyr Neto/Getty Images)(Bing United States)

Young chacma baboon in Moremi Game Reserve, Okavango Delta, Botswana (© Chris Schmid/Aurora Photos/Offset)(Bing United States)

Giant mural in the Las Palmitas neighborhood of Pachuca, Hidalgo state, Mexico (© Omar Torres/Getty Images)(Bing United States)

A Cape white-eye perched (© Rob Hofmeyr/Mammoth HD)(Bing United States)

Gates of the Arctic National Park and Preserve, Alaska (© 167/Michael Melford/Corbis)(Bing United States)

Galápagos sea lion and pup, Rábida Island, Galápagos Islands, Ecuador (© Pete Oxford/Minden Pictures)(Bing United States)

Xinyuan County, China (© Danny Hu/Getty Images)(Bing United States)

Wreckage of the SS Thistlegorm in the Red Sea (© Alex Mustard/Minden Pictures)(Bing United States)

Dolwyddelan Castle in Wales (© Jim Richardson/National Geographic Creative/Alamy)(Bing United States)

Lavender blooming in northern Thailand (© Tanat Loungtip/Alamy)(Bing United States)

Orcus sculpture in the Gardens of Bomarzo in Bomarzo, Italy (© Canadastock/Shutterstock)(Bing United States)

Milky Way above Mount Rainier in Mount Rainier National Park, Washington (© Brad Goldpaint/Aurora Photos)(Bing United States)

Fox kits playing in the Rocky Mountain foothills near Cascade, Montana (© Jason Savage/Tandem Stills + Motion)(Bing United States)

Colored scanning electron micrograph of a seven-spot ladybird in flight (© Power and Syred/Science Photo Library)(Bing United States)

Inside a glacier cave in Oregon’s Three Sisters Wilderness (© Marc Adamus/Aurora Photos)(Bing United States)

The Biosphere museum in Montreal, Canada (© Guenther Schwermer/REX/Shutterstock)(Bing United States)

Installation by land artist Paul de Kort in De Biesbosch National Park, Netherlands (© Frans Lemmens/Alamy)(Bing United States)

Striped skunk kit smelling a wildflower (© Tim Fitzharris/Minden Pictures)(Bing United States)

Blooming butterweed in Congaree National Park, South Carolina (© Jeff Lepore/Alamy)(Bing United States)

Burano, in the Venetian Lagoon, Italy (© Digitaler Lumpensammler/Getty Images)(Bing United States)

A green sea turtle shows off its shell (© Sergi Garcia Fernandez/Minden Pictures)(Bing United States)

An elevated walkway in the Lujiazui district of Shanghai, China (© Mark Harris/Getty Images)(Bing United States)

Lake Siskiyou reflects snowy Mount Shasta in northern California (© Walter Bibikow/Danita Delimont/Alamy)(Bing United States)

Paraglider over Lake Thun, Switzerland (© Uli Wiesmeier/Getty Images)(Bing United States)

Namib Desert at the Atlantic Ocean in Africa (© Robert Harding World Imagery/Offset)(Bing United States)

Mural in the Desert View Watchtower at Grand Canyon National Park, Arizona (© Richard Nowitz/National Geographic Creative/Alamy)(Bing United States)

Dyed silk hanging to dry in Marrakech, Morocco (© David Noton Photography/Alamy)(Bing United States)

Guard at the Tomb of the Unknowns, Arlington National Cemetery, Virginia (© Mira/Alamy)(Bing United States)

To Sua Ocean Trench in Lotofaga, Upolu, Samoa (© Danita Delimont/Offset)(Bing United States)