Extras
    
Why is the Martian sky red by day… but blue at sunset?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E12
                
            
            
                
                  | 
                
            
            
                
                  11:08
                
            
          
        Is autism really on the rise—or are we just recognizing it more?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E11
                
            
            
                
                  | 
                
            
            
                
                  36:47
                
            
          
        Seedless fruits are delicious, convenient… and completely unnatural.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E10
                
            
            
                
                  | 
                
            
            
                
                  14:51
                
            
          
        What does randomness really mean? And why your digital life depend on it?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E9
                
            
            
                
                  | 
                
            
            
                
                  21:13
                
            
          
        Why do we have different blood types? And why do we have blood at all?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E8
                
            
            
                
                  | 
                
            
            
                
                  16:20
                
            
          
        How did dinosaurs become birds—and what good is half a wing?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E7
                
            
            
                
                  | 
                
            
            
                
                  16:18
                
            
          
        Just how big would a telescope need to be to actually see an alien world in detail?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E6
                
            
            
                
                  | 
                
            
            
                
                  16:00
                
            
          
        Dire wolves are back—sort of.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E5
                
            
            
                
                  | 
                
            
            
                
                  26:19
                
            
          
        The key enzyme behind photosynthesis isn’t actually all that great at its job.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E4
                
            
            
                
                  | 
                
            
            
                
                  16:53
                
            
          
        The oldest rocks on Earth are more than just ancient—they’re time machines!
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E3
                
            
            
                
                  | 
                
            
            
                
                  16:40
                
            
          
        
                
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                            Be Smart Season 1
Why is the Martian sky red by day… but blue at sunset?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E12
                
            
            
                
                  | 
                
            
            
                
                  11:08
                
            
          
        Is autism really on the rise—or are we just recognizing it more?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E11
                
            
            
                
                  | 
                
            
            
                
                  36:47
                
            
          
        Seedless fruits are delicious, convenient… and completely unnatural.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E10
                
            
            
                
                  | 
                
            
            
                
                  14:51
                
            
          
        What does randomness really mean? And why your digital life depend on it?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E9
                
            
            
                
                  | 
                
            
            
                
                  21:13
                
            
          
        Why do we have different blood types? And why do we have blood at all?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E8
                
            
            
                
                  | 
                
            
            
                
                  16:20
                
            
          
        How did dinosaurs become birds—and what good is half a wing?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E7
                
            
            
                
                  | 
                
            
            
                
                  16:18
                
            
          
        Just how big would a telescope need to be to actually see an alien world in detail?
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E6
                
            
            
                
                  | 
                
            
            
                
                  16:00
                
            
          
        Dire wolves are back—sort of.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E5
                
            
            
                
                  | 
                
            
            
                
                  26:19
                
            
          
        The key enzyme behind photosynthesis isn’t actually all that great at its job.
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E4
                
            
            
                
                  | 
                
            
            
                
                  16:53
                
            
          
        The oldest rocks on Earth are more than just ancient—they’re time machines!
          
          
            
                
                    
                        Episode:
                    
                
            
            
                
                    S13
                
            
            
                
                  E3
                
            
            
                
                  | 
                
            
            
                
                  16:40
                
            
          
         
 
 
 
 
 
 
 
 
 
 
 
