A million little pieces: the race to rebuild the world's coral reefs

Could speed-growing in hyperefficient nurseries be key to saving them? The world's most significant coral restoration projects cover just a few acres: but reefs cover an area millions of times that size. So it’s more important than ever to understand what it would take to grow enough coral to slow the decline of a degraded reef or bring one back more quickly. One man is on a mission to reverse that — by speed-growing coral in hyperefficient nurseries. Rowan Moore Gerety explores how David Vaughan is trying to scale up using insights from industrial aquaculture.