Plants at the Royal Botanic Gardens in Kew, UK.
Media playback is unsupported on your device

Scientists warn 21% of plants at risk of extinction

Scientists have published their first global assessment of the state of the world's plants.

They warn that 21% of all plants are at risk of extinction and face a broad range of threats.

The research was carried out by the Royal Botanic Gardens Kew in the UK.

Rebecca Morelle reports.

  • 10 May 2016
Go to next video: Fears bluebell site is under threat