Phil: I'm Phil.
Beth: And I'm Beth.
Phil: Today we're going to be talking about an interesting approach
to the problem of invasive species.
When animals or plants are introduced to new areas,
they can be dangerous for existing wildlife.
Beth: Tell me about it!
Every time I plant something in my garden, squirrels dig it up.
I'm getting really fed up with them.
Phil: Have you tried eating them?
Beth: Sorry, what?
Eat the squirrels?
Phil: That's right!
One of the simplest ways to deal with invasive species is just to eat them.
In this programme we'll be hearing about initiatives in the UK and Belize
that are trying to get people to improve things using their stomachs.
Beth: OK, but before that, I've got a question for you, Phil.
Lionfish are aggressive predators which hunt over 50 different varieties of fish.
To help them do this, their stomachs can expand, but by how much?
Is it: