Magic mushrooms: how scientists discovered fungi are the secret ingredient for restoring the world’s forests

Healthy fungal networks help trees and plants grow, making them key to successful reforestation. The only problem? Almost nothing is known about this subterranean ecology

Even in midsummer, the ancient hazelwoods on the Hebridean island of Seil are cool and quiet. Countless slanted stems of hazel support a thick canopy, which blots out the sun and blankets everything below in a sort of fairytale darkness", says Bethan Manley, a biologist at the Wellcome Sanger Institute.

Moss and lichen coat branches threaded with honeysuckle, forming a great dome above you, adds David Satori, a researcher at Royal Botanic Gardens, Kew.