Every single day there is a growing number of people to feed and in the next thirty to forty years we will need to double our food production to sustain the increase in population. In this episode author Julian Cribb examines the infestations that are threatening our food supply.

This documentary series features the invasive species and pests who threaten our forests, waterways, food supplies and cities. Each program gives an intimate, close-up picture of each species, investigates why they are a concern, examines current and past infestations and possible future threats. You'll learn the role played by dedicated scientists who are attempting to tackle the challenges presented by each species.

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