Grasmere, Lake District, Cumbria, England (© Thomas Molyneux/Getty Images)
Caribbean flamingo nests, Ría Lagartos Biosphere Reserve, Yucatán, Mexico (© Claudio Contreras/Minden Pictures)
American bison in Yellowstone National Park, Wyoming (© Ian Shive/TANDEM Stills + Motion)
Pueblo ruins, Hovenweep National Monument, Utah (© Alan Majchrowicz/Getty Images)