nature is at the base of our supply chains. the uk's lack of biodiversity is linked to the industrial revolution. intensive farming also plays its part. what more can be done to protect places like this? last year, the secretary of state turned down a plan to build 500 homes next door to this nature reserve. askham bog is an extraordinary place. it holds between 5% and 10% of all species of griffin. ——in britain. and, yet, if we don't do anything at all, we will lose more species than we already have from a place like this and if we don't get it right, if we allow the wider countryside to become nature rich again, this is the place from which the surrounding land will be colonised, and that's true of all the other nature reserves across the country. tomorrow, a week—long un biodiversity conference will begin virtually, hosted by china. negotiators will thrash out plans for protecting nature over the next ten years. a decade ago, 20 targets were set, but none of them were met.