Earthworms: Shedding light on an underground hero

They are the farmer's friend, but data on the earthworms of Northern Ireland is thin on the ground.

A team of scientists is hoping to plug that gap by gathering samples for analysis and training ordinary people to help build their database.

The Centre for Environmental Data and Recording (CEDaR) works with National Museums NI to record information about local wildlife and the habitats they need to thrive.