Replica of the Wright Flyer undergoing aerodynamic tests at NASA

[20190819] - 'Replica of the Wright Flyer undergoing aerodynamic tests at NASA's Langley Research Center, Virginia (© Chuck Thomas/Science Photo Library)(Bing United States)'

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

[20190818] - 'Tidal pools of Leça da Palmeira, Portugal (© Fernando Guerra/age fotostock)(Bing United States)'

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

[20190817] - 'Bees for National Honey Bee Day (© Angela Parker/Offset)(Bing United States)'

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

[20190816] - 'Yukon River viewed from the Midnight Dome, Dawson City, Yukon, Canada (© Robert Postma/Getty Images)(Bing United States)'

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

[20190815] - 'Smögen, Sweden (© Martin Wahlborg/Getty Images Plus)(Bing United States)'

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

[20190814] - 'Male and female Ecuadorian horned anoles in Mindo, Ecuador (© James Christensen/Minden Pictures)(Bing United States)'

Mars Express image of the icy cap at Mars’ south pole (© ESA/DLR/FU Berlin/Bill Dunford)(Bing United States)

[20190813] - 'Mars Express image of the icy cap at Mars’ south pole (© ESA/DLR/FU Berlin/Bill Dunford)(Bing United States)'

Elephants in Amboseli National Park, Kenya (© Adam Bannister/Offset)(Bing United States)

[20190812] - 'Elephants in Amboseli National Park, Kenya (© Adam Bannister/Offset)(Bing United States)'

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