Trees grow back pretty quickly (they're talking timescales of thousands of years for this plan) and that's all humanity needs for energy to start.
The main reason we need all that power is for our creature comforts. We don't technically need them to survive but we don't know how to live without them anymore. There being billions of us doesn't help either. A rebooted humanity shouldn't have too much difficulty with that though.
The main reason we need all that power is for our creature comforts. We don't technically need them to survive but we don't know how to live without them anymore. There being billions of us doesn't help either. A rebooted humanity shouldn't have too much difficulty with that though.