We propose the only viable way to still save the planet for humanity. Indeed we argue that the planet climate and ecosystems has already triggered several trigger points. In such systems, change will change exponentially with time, even without any source of excitation anymore. As a result, all our prediction of climate change impacts are already underestimating the effects, as we observe daily, and feel-good measures like grass root ecology or emission reductions are just too late and risk distracting from what needs to be done, now, not later. There is no time for later.The proposal is as follows: to starve off the exponentials, we must re-absorb CO2, CH4 and any other relevant pollutant to preindustrial levels without re-emitting other fossil fuel. It is a planet scale endeavor that requires nuclear fusion to power it. While we learn to dominate fusion, we must use nuclear fission to start re-absorption now. We can’t wait. We have to start now.