Who Made These Giant Desert Figures… and WHY?

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The three human figures and two animals that make up the Blythe Geoglyphs - or Blythe Giant Intaglios - are enormous. So big in fact, that they can’t be fully appreciated from the ground. But the figures were carved into the earth long before air travel was invented. So who made them...and why?

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Hosted by Joe Hanson from It's Okay to be Smart, Overview uses incredible 4k drone footage to reveal the natural phenomena shaping our planet from a 10,000-foot view—literally.