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Invasive species are spotlighted in this documentary series. First up: giant crabs that are invading Northern Europe.
A look at lionfish that have destroyed reefs from California to Brazil.
Fire ants found home to the cities and farms of the Southern US after being accidentally imported from Brazil decades ago; scientists study the ants and find ways to control them.
Cute caterpillars can be incredibly destructive. Each ‘pine processionary caterpillar’ carries 60,000 venomous hairs. Their name comes from the way they parade from a silk nest in the treetops down to the ground, where they become fast-flying moths.
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