As part of our week-long focus on seeds we go behind the scenes at the Millennium Seed Bank in Sussex. It's celebrating its 25th anniversary this year. Experts from Kew Royal Botanical Gardens collect, clean and curate wild seeds from around the world. They're stored in giant vaults and safeguarded for the future. This helps protect endangered species of plants, but scientists also germinate the seeds for use in conservation and agriculture.

Presenter = Charlotte Smith