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    Untold Earth
            What NASA Is Looking For In Yellowstone National Park
                
                    
                        
                            Season 1
                        
                    
                    
                        
                            Episode 7
                        
                    
                
            
            
            The Grand Prismatic Spring is the most recognizable thermal feature of Yellowstone National Park, but some of its most fascinating features are invisible to the naked eye. Underwater exists a diverse system of microbes which scientists have been studying for decades, and have been the catalyst for life changing discoveries. Could these microbes be the key to discovering life on other planets?
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          7:46
        
      
    
  
  
                    
                
            With under 40 pupfish left in the wild, they are possibly the rarest fish on the planet.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          7:53
        
      
    
  
  
                    
                
            Fossilized footprints suggest human presence in the Americas far earlier than previously believed.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          8:22
        
      
    
  
  
                    
                
            The Bay of Fundy's extreme 50 foot tides carry enough potential energy to power a small city.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          10:55
        
      
    
  
  
                    
                
            Every winter, giant cuttlefish gather by the thousands for a battle royale to win a mate.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          8:22
        
      
    
  
  
                    
                
            In Florida’s wetlands the carnivorous pitcher plant is blurring the lines between predator and ally.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          7:33
        
      
    
  
  
                    
                
            The Northern Lights captivate viewers, but there may be more to this phenomenon than meets the eye.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          7:07
        
      
    
  
  
                    
                
            What secrets can we unearth about the future of our planet from this petrified forest in Arizona?
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          7:53
        
      
    
  
  
                    
                
            Discover how The Atchafalaya Basin protects Louisiana's coast from hurricanes.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          10:06
        
      
    
  
  
                    
                
            Meet Pando, an ancient tree in Utah that has grown into one of Earth's largest living wonders.
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          7:11
        
      
    
  
  
                    
                
            How are truffles key to the survival of the forest ecosystem at large?
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          6:49
        
      
    
  
  
                    
                
            What does it mean to preserve a place that is defined by it's impermanence?
        
        
     
    
                        
  
  
    
      
    
  
  
    
      
        
          5:57
        
      
    
  
  
                    
                
            Microbial warfare has been raging for thousands of years deep below the Chihuahuan Desert.
        
        
     
     
     
     
     
     
     
     
     
     
     
    