Seaweed – we have used it for centuries in food and toiletries. It can help keep toothpaste and ice cream soft.
But in some parts of the world, supply has been affected by climate change.
Today, the people of Zanzibar are learning new farming methods with the help of local projects such as the Milele Zanzibar Foundation and the Panje Project.
A video for People fixing the world by Celestina Olulode, Esther Namuhisa and Nicholaus Mtenga.