From powering cars to feeding farm animals, how using seaweed more can help the planet. We hear how a local business in Barbados is using sargassum seaweed to power cars, providing an eco-friendly alternative for islanders and potentially helping to clear the beaches of smelly seaweed. Also we visit the European company aiming to replace single-use plastics with seaweed-based packaging. And how feeding seaweed to cattle can dramatically cut emissions of planet-warming methane gas.

People Fixing The World from the BBC is about brilliant solutions to the world's problems. We release a new edition every week. We'd love you to let us know what you think and to hear about your own solutions. You can contact us on WhatsApp by messaging +44 8000 321721 or email peoplefixingtheworld@bbc.co.uk. And please leave us a review on your chosen podcast provider.

(Image: A person holding clumps of dulse seaweed in Canada, James MacDonald/Bloomberg)