The botanist and biologist Francis Hallé, creator of the "Raft of the treetops", has enabled the exploration of the canopies of the tropical forests to develop in a considerable way. Professor of botany at the IRD of Montpellier (Institute of Research and Development), he has trained three generations of researchers by sharing his scientific knowledge and his fascination with the plant world. His worldwide fame makes him one of the greatest advocates for the primary rainforests. Author of many books, he was at both the genesis and centre of Luc Jacquet's film « Il était un foret » ("It was a forest") released in 2013.
Indefatigable, at over 80 years old, he drives multiple conferences that testify to the extraordinary beauty of the great forests of the tropics and their fundamental role in the regulation of the major planetary equilibrium: the tree is source of life, primary and best ally of man, the body of which comes from both the soil and the sky. By and of itself, it is an extraordinary air purification plant, at the same time both free and the most efficient there is.
Drawing, in addition to his notes and observations, is for Francis Hallé the main foundation for his scientific research. His work, accumulated over more than half a century, crossing the forests of our earth, illustrates the extent of his knowledge and brings to public attention the wealth of recent discoveries in his field. At the same time, he highlights the immensity of our ignorance and the importance of what remains to be discovered.