are on the front line of rising sea levels. the sand barrier idea is cheaper than building a concrete seawall. this more natural solution could be used to protect more coastal communities. in a way that making space for water, so allowing natural processes to come back in places where we can do this, i think that's the attitude we need to have, and that we're not going to be able to keep building sea walls and defend, defend, defend. in 2021, nearly 60 acres of trees were cut down in northumberland — to reduce carbon emissions. it sounds strange, but it was done to save an ancient peat bog, which traps far more carbon than trees ever could. the building blocks of the peatland are the sphagnum mosses which themselves, like this one, are absolutely full of water. they're about 90% water.