to the excessive growth. and on the other side of the world, there's a company trying to fight it. just like any other plant, seaweed photosynthesises. and because it absorbs carbon faster than trees, there's also a lot of potential. and a team here is using this to their advantage. they are building a semi—autonomous ocean robot to sink the sargassum and the c02 it captures to the bottom of the sea. doing so, they prevent sargassum from hitting shores whilst fighting global warming. the ipcc has projected in their most optimistic pathway, which is 1.5 degrees or less, that we will need to remove from the atmosphere ten billion tonnes of carbon every single year by 2050, which would be in terms of volume the largest industry