05/09/23 Invasive species report, herbs grown in the field and indoors

Thousands of invasive species around the world are a major part of biodiversity loss; a new report says the evidence is being ignored. This week we're exploring farming herbs in the UK. Today Anna Hill visits a farm growing chives out in the field, and hears how basil can been produced indoors all year round in a vertical farm. Presented by Anna Hill and produced by Beatrice Fenton.