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Fun Fact: The colors on a primary rainbow are always in order of their wavelength, from longest to shortest: red, orange, yellow, green, blue, and violet. . PC: Tuan Nguyen @natgeoyourshot http://yourshot.nationalgeographic.com/ | Nature is all around you, even in your own backyard. Share a photo of how you are your own #BackyardWarrior. . Join Nat Geo WILD for the world’s greatest natural event, #EarthLive, on July 9th at 8/7c!

Mining waste contaminates drinking water, and in some cases causes people to go blind. . Watch #FromTheAshes this Sunday at 9/8c to learn more.

“In every walk with nature one receives far more than he seeks.” —John Muir . PC: Dolors Bar | @natgeoyourshot . http://yourshot.nationalgeographic.com/ | Nature is all around you, even in your own backyard. Share a photo of how you are your own #BackyardWarrior. . Join Nat Geo WILD for the world’s greatest natural event, #EarthLive, on July 9th at 8/7c!

Tigers are the largest cats in the world. . Learn more on Secret Life of Predators starting tonight at 8pm! . PC: John Cullum

"Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books." - John Lubbock . Long Way Ahead | Photograph by Agnieszka Maruszczyk . National Geographic YourShot @natgeoyourshot | http://yourshot.nationalgeographic.com/ | Nature is all around you, even in your own backyard. Share a photo of how you are your own #BackyardWarrior. • Join Nat Geo WILD for the world's greatest natural event, #EarthLive, on July 9th at 8/7c!

We’re thrilled to announce that the second season of #Genius will chronicle the life and work of Spanish painter Pablo Picasso. . Much like Albert Einstein, Picasso imagined and interpreted the world in totally new and unorthodox ways, and consistently reinvented our perceptions of art and creativity. . Genius returns in 2018 on @natgeochannel.

Watch @t.r.knight transform into FBI Director J. Edgar Hoover in this behind-the-scenes moment on the #Genius set. ❤️ If you enjoyed last night's season finale! ・・・#Repost @t.r.knight with @repostapp ・・・ Watch Davina, Kate, Floris and Göran's artistry at work as they make me into Hoover. #Genius

Here’s your first look at The Long Road Home, chronicling the events of April 4, 2004 on "Black Sunday," when a platoon from the 1st Cavalry Division in Fort Hood, Texas was ambushed in Sadr City, Iraq. Tune in to #LongRoadHome this fall on @NatGeoChannel.

Albert Einstein wanted nothing more than to understand the universe, and he continued working toward that goal until the day he died. . Learn about the last few projects that he worked on during the 2-hour #Genius season finale tonight at 9/8c!

Watch the 2-hour #Genius season finale TONIGHT at 9/8c!

Was Einstein right about Heisenberg's Uncertainty Principle? . Tune into the #Genius 2-hour season finale tomorrow night at 9/8c.

Photo by Robert Viglasky #sponsored by @fujifilmX_US . Our legacy lives on through our children. . Photo as seen on #Genius . You can capture epic photos this Father's Day with the latest FUJIFILM X Series mirrorless technology. #sponsored