Climbers ascending the Jungfrau, in the Bernese Alps, Switzerland (© plainpicture/Cultura/Lost Horizon Images)(Bing United States)

Climbers ascending the Jungfrau, in the Bernese Alps, Switzerland (© plainpicture/Cultura/Lost Horizon Images)(Bing United States)

A pedestrian skyway in Hong Kong’s Wan Chai District, China (© timestock22/Nimia)(Bing United States)

A pedestrian skyway in Hong Kong’s Wan Chai District, China (© timestock22/Nimia)(Bing United States)

Navy personnel at the first Pearl Harbor Remembrance in 1942, Kaneohe Bay, Hawaii (© Bettmann/Getty Images)(Bing United States)

Navy personnel at the first Pearl Harbor Remembrance in 1942, Kaneohe Bay, Hawaii (© Bettmann/Getty Images)(Bing United States)

A frozen waterfall in the Korouoma Gorge, Finland (© Niall Benvie/Minden Pictures)(Bing United States)

A frozen waterfall in the Korouoma Gorge, Finland (© Niall Benvie/Minden Pictures)(Bing United States)

Semiconductor manufacturing at Infineon Technologies in Villach, Austria (© Krisztian Bocsi/Bloomberg/Getty Images)(Bing United States)

Semiconductor manufacturing at Infineon Technologies in Villach, Austria (© Krisztian Bocsi/Bloomberg/Getty Images)(Bing United States)

Quinoa plants in Peru (© Westend61 GmbH/Alamy)(Bing United States)

Quinoa plants in Peru (© Westend61 GmbH/Alamy)(Bing United States)

Red grouse in the Scottish Highlands (© Mark Sisson/REX/Shutterstock)(Bing United States)

Red grouse in the Scottish Highlands (© Mark Sisson/REX/Shutterstock)(Bing United States)

Resurrection Bay at Kenai Fjords National Park, Alaska (© Ron Niebrugge/Alamy)(Bing United States)

Resurrection Bay at Kenai Fjords National Park, Alaska (© Ron Niebrugge/Alamy)(Bing United States)

Cierva Cove on the Antarctic Peninsula (© Aurora Photos/Offset)(Bing United States)

Cierva Cove on the Antarctic Peninsula (© Aurora Photos/Offset)(Bing United States)