The future of humanity has always been closely linked to forests. Trees provide shelter, medicine, food, a precious raw material, and heat. In broader terms, forests help maintain life on earth by purifying water, soil and the air ... and help Foster over half of the world's biodiversity. But for over two centuries, massive deforestation has greatly endangered forests. For several decades, scientists have identified a new danger: global warming, a great threat to equilibrium in forests all around the world. Faced with direct and indirect pressures from humanity, what will future forests look like? How much do we need them, and what would a world without forests look like? Human pressure on forests has never been so strong. In light of the dangers threatening these ecosystems, what will they look like by the end of the century? Will some forests disappear? What would be the consequences?