Boundary Trail in Mount St. Helens National Volcanic Monument, Washington (© Don Geyer/Alamy)

Kiteboarders and windsurfers off the Pelješac Peninsula, Croatia (© helivideo/Getty Images)

North Cascades National Park, Washington (© Ethan Welty/Tandem Stills + Motion)

Wheat field in Ukraine (© Yuriy Kulik/Getty Images)

Menton, France (© Flavio Foglietta/Getty Images)

A burrowing owl chick and adult in South Florida (© Carlos Carreno/Getty Images)

Faro de Playa Lago, Costa da Morte, Muxia, Galicia, Spain (© Carlos Fernandez/Getty Images)

Beehives in the Muniellos Nature Reserve, Asturias province, Spain (© ABB Photo/Shutterstock)

Solar Impulse 2 flying over the pyramids in Giza, Egypt (© Jean Revillard/Solar Impulse2 via Getty Images)

Källö-Knippla, an island in the archipelago of Gothenburg, Sweden (© Martin Wahlborg/Getty Images)