Giant seabirds and shellfish are being used to help protect our planet.
On an tiny island in the remote Southern Ocean, a French researcher wanted to find out why so many birds were being killed by fishing boats.
By attaching radar loggers to Albatrosses, he inadvertently invented a powerful method for tracking down illegal vessels.
And in New Orleans in the US, a restaurant owner is recycling tonnes of old oyster shells.
They’re being put back in the ocean to protect the shoreline and create new reefs so more oysters can grow.
Presenter: Myra Anubi
Reporter: Anna Adams
Producer: Zoe Gelber
Series producer: Tom Colls
Sound mix: Hal Haines
Editor: Penny Murphy
Email: peoplefixingtheworld@bbc.co.uk
Image: An albatross (Getty Images)
