We are headed for Earth’s sixth mass extinction due to overheating, and in this work we seek to reduce the Earth’s surface temperature by 2 K over a few years. When we see buds becoming branches, puppies growing, children shouldering backpacks and going out to face life, and we think about climate change due to global warming, we must consider the increased toll everyone faces; it’s unfortunately likely that if we continue like this, we might not see our sixth human generation, about two hundred years. It all seems pointless, and our sixth mass extinction is approaching with the continued rise in temperature. This paper will propose several methods to reduce the greenhouse effect to which the Earth is subjected, producing a gradual and inexorable increase in temperature and suggesting the sixth mass extinction. These methods could be implemented with significant funding and international collaboration, both public and private. Some methods may seem whimsical and impractical, others too imaginative, some feasible and interesting, but all will need to be carefully simulated, both technically and economically, and above all, environmentally. The methods described here for managing heat related to the greenhouse effect, temperature, and oxygen are primarily astrophysical, aerospace, and terrestrial. As is well known from thermodynamics: temperature represents the thermal state of a body on various scales. Therefore, if we want to lower the temperature, we must reduce the input of thermal energy into the body in question, “the Earth,” and facilitate its expulsion. Managing oxygen in the atmosphere is a very broad and at times controversial issue; radical but questionable solutions will be proposed. The astrophysical method proposed here essentially involves placing several satellites into orbit with large filters to reduce the Earth’s solar radiation, a method whose main criticality is its control in the event of failure. The second method involves managing contrails, both in terms of color, persistence in the atmosphere, and the introduction of catalysts to reduce the lifetime of the contrails and other greenhouse gases. The third and most comprehensive method proposed involves managing flames and the civil and industrial circumstances that produce heat; protecting the “trees,” and, last but not least, recommendations for oxygen management. All these issues are treated as if we were fundamentalists, but the problem is fundamental and no shortcuts are being taken: it will be up to the legislator to find and enforce the necessary means and measures. The most common problem is malicious forest fires (even low-lying ones), which represent a scourge to be eradicated with modern technology and exemplary punishment; the resulting warming and lack of oxygen increases the greenhouse effect. In essence, if we continue like this, the fifth generation could become extinct, making it seem pointless to put on a backpack and instilling a sense of impotence in those willing to continue their daily activities under the burden of overheating and the resulting climate cataclysms that will become pervasive and daily. We still have time to act, but not for long