91福利社

Rob Newman reminds us about some now extinct lifeforms - and our role in their demise.

The Alabama Pigtoe Mussel was an unassuming little mollusc.

Half-buried in the silty banks of the Mobile River, these mussels filtered plankton and algae from the slow-moving waters.

When the last Alabama Pigtoe closed its shell forever, secrets long hidden in the river bed, came bubbling up to the surface.

Produced at 91福利社 Bristol by Emily Knight.

First broadcast on 91福利社 Radio 4 in November 2019.