Visit the Millennium Seed Bank and learn about the extensive conservation work carried out by Kew working worldwide with our 80 partner countries to save endangered plant species. We have successfully banked over 13% of the world’s wild plant species. We are going to save 25% of those species with bankable seeds by 2020 (75,000 species). The Millennium Seed Bank Partnership is the largest ex situ plant conservation programme in the world. Watch scientists at work and stand above the vaults where seeds are held at minus 20 degrees.