Replica of the Wright Flyer undergoing aerodynamic tests at NASA's Langley Research Center, Virginia (© Chuck Thomas/Science Photo Library)

Tidal pools of Leça da Palmeira, Portugal (© Fernando Guerra/age fotostock)

Bees for National Honey Bee Day (© Angela Parker/Offset)

Yukon River viewed from the Midnight Dome, Dawson City, Yukon, Canada (© Robert Postma/Getty Images)

Smögen, Sweden (© Martin Wahlborg/Getty Images Plus)

Smögen, Sweden (© Martin Wahlborg/Getty Images Plus)

Male and female Ecuadorian horned anoles in Mindo, Ecuador (© James Christensen/Minden Pictures)