Global Warming is becoming a terrifying issue, negatively affecting quality of life, world economy and geopolitical stability. The main cause is still debated by scientists. Some of them consider climate change as a natural cyclic phenomenon. Some others consider carbon dioxide emissions as the main cause of global warming and the consequent climate change. Whatever truth there is behind climate change, the fact is that we need to change the concept of "sustainable development" into a more effective "tree-centric development", because it is clear to science that only trees can reduce the atmospheric carbon dioxide already emitted and the consequent greenhouse effect. In other words, natural phenomenon or not, we need to plant as much trees as possible, we need to reduce energy consumption based on combustion, we need to use building materials with the lowest carbon footprint, because if we cannot stop the process, we must try at least to delay it. In the mean time, forests can give us time, our time-machine, and while we reduce combustion-based technologies above all in energy, transports, architecture, agriculture, we can sequestrate atmospheric carbon through forests, receiving back timber, creating a self-sustainable tree-centric economical system. It comes easy to deduce that, in this system, wooden architecture is the main road to run towards the evolution from Homo Sapiens to Homo Arboreus.