We welcome back in Prof. Jon F. White from Crecganford to discuss the historic mythological evoluation of dragons. When did dragons grow into Smog from basically an oversized winged lizard?

We trace the stories of the past and try to apply them to arenas we all recognize. How did serpents turn into dragons? But many of these serpents were enormous. Size of the primordial waters of the universe big. Encircling the world big. Making up all the bodies of water on Earth big. A beast that a hero and/or god needed to slay big. 

Is the snake is Eden related? Is my latest latest latest obsession - Ophiuchus - related? 

Jon entertains some of my notions. He dispells some others. And he sticks to the evidence that research supports. 

Wait...what about fire? We got that.