Could tech protect our coral reefs?
The Great Barrier Reef is the largest living structure on the planet. It's home to a quarter of our marine life and serves as a carbon sink, removing CO2 from the atmosphere. At its core is coral, which is under threat. Technology reporter Nick Kwek explores some of the latest tech innovations being trialled in Australia to try to preserve coral, including the world's largest cryo-preservation bank of living corals.
This video is from BBC Click, the BBC's flagship technology programme.
