The X-Files, Season 2

Old Man:
Business changed. People changed too.

Mulder:
In what way?

Old Man:
Competition. Used to get by with fifty milk cows. Now, you got to have five hundred. Used to turn them out to pasture, now you keep them in pens and grain feed them.

Scully:
You said you wanted to show us something.

Old Man:
You're looking at it. See those men over there? Well, they're injecting the cattle with something called B.S.T. Bovine somatotrophin.

Scully:
A genetically-engineered growth hormone.

Old Man:
Yeah, shoot them up and the cow will produce ten percent more milk. Feed it to beef cattle, more meat on the hoof. Changed the business. Changed a whole lot of things.

Scully:
How do you mean?

Old Man:
Well, that, uh, fracas in town this afternoon. Ten, even five years ago, never would have happened. People around here have changed... gotten mean... spiteful... dog-eat-dog. We had seven rapes here last year by high school boys. Well, that, um... this, this business of the kids being found in the woods... well, I think that you're going to find it all comes from the same root source.

Mulder:
The growth hormone.