If you want to target and reduce a fish stock, a sure bet is to make it into a fishery.

Often, we don't realize we miss infectious diseases until we have invasive species that become pests without their natural enemies. Parasites act like thermostats - when a species becomes abundant it is more susceptible to infectious diseases. The disease acts like a safety valve, keeping populations in check.

People were like, 'What the heck is that thing?' ... Nobody knew what a rat rod was back then.

Parasites are absolutely a bad thing if you're the individual infected by them. But they are a very natural component of ecosystems. Parasitism is the most popular animal lifestyle on the planet.

You could tell it aggravated him a little bit, ... When the show was over, the guy said, 'I guess I'll just take this thing home, sand the paint off and let it rust.' .