Best-selling author, explorer and natural navigator, Tristan Gooley, takes us on solo crossings of the Atlantic in a small yacht and a light aircraft and reveals how these journeys led to a career searching for signs in nature.

Tristan explains how we can navigate using the sun, moon, stars, weather, plants and animals and how he has used these ancient techniques in the desert, the jungle, up mountains, in cities, on oceans and in the English countryside.

Find more information about Tristan on his website.

The growing number of flies indicate an oasis

Heather prefers the south-facing side of a ditch in Ireland

Snow strips on only one side of the trees

Using lichens to navigate in mist in La Palma