'Testament: The Little Rock Nine Monument,' Little Rock, Arkansas

Burchell's zebras, Rietvlei Nature Reserve, South Africa

Ice and Snow Sailing European Championships on Lake Balaton in Hungary

Blackbird in Essex, England

Blue-green waters around the Bahamas as seen from the International Space Station

Red mangrove tree seedlings in Guanahacabibes National Park, Cuba

Heaven's Gate Cave in Tianmen Mountain National Park, China

Colle Santa Lucia in the Dolomites, Italy

Moai statues on Easter Island, Chile

Mountain hare in Derbyshire, England

Kangaroo mother and baby

King penguins in the Falkland Islands

Park City, Utah

White Sands National Park, New Mexico

Muniellos Nature Reserve in Asturias, Spain

Inscription Wall at the Martin Luther King Jr. Memorial in Washington, DC

Aura River in Turku, Finland

Domestic donkey feeding on cherry twigs

Giant kelp in the Channel Islands National Marine Sanctuary, California

Rumelihisarı on the Bosporus Strait at Istanbul, Türkiye