A huge planetary upheaval is taking place before our very eyes: the continents are continually moving, albeit very slowly, a sign that the Earth is constantly evolving over the long term. Over the last few decades, scientists have gained a better understanding of what is at stake in this incessant tectonic cycle, which should lead to the current continents forming a supercontinent, Amasia. A rather chilling prospect.

And yet the forces at work in this great upheaval could well explain the very existence of life on Earth. And they are only just beginning to be deciphered.