In nature, the males of the species are often in conflict over control of resources, food, reproduction, survival.

Sometimes the fight is physical, but more often it's a show, posturing, roaring, the kinds of displays of strength and power meant to intimidate arrival and send

them packing. And human animals do it too. And once upon a time, there were two human males

who puffed themselves up real big, who roared their loudest roars and schemed their most

terrible schemes. They lied and tricked and undermined each other every chance they got.

They weren't warriors or soldiers.

They weren't kings or conquerors.

They were a couple of paleontologists.

And each was hell-bent on being the world's authority on dinosaurs.

But all that bro-on-brose cerebral violence led to mistakes, embarrassing mistakes.

And thanks to these two, we know a lot about the dinosaurs.

And also, thanks to these two, with their giant egos and petty rages,

there are things we may never know.

Welcome to a true tale of the Wild West, the Bone Wars.

And they got a small beam of light against the mirror.

I'm going to fly! And they got a small beam of light against the mirror.

True, weird, stuff.

Dinosaurs had dominion over this planet for about 160 million years.

Compared that to our puny 2.5 million years of running the show.

Their rain was 64 times longer than hours. So far, and if not for a wayward asteroid six

miles wide, slamming into Earth 66 million years ago, the dinosaurs might still rule this place.

Because you've grown up in a world where dinosaurs were not only a scientific fact, but also beloved icons and pop

...