But if we act quickly, humanity will have a chance to survive this long process. Once the Earth starts to move away from the sun, it will gradually cool down, and many things really depend on such a development path. Even if it is conservatively estimated that within a few years, human beings will become a snowball in the face of the earth. By then, the existence of liquid water on the earth’s surface can no longer be maintained. Before long, all life on the surface will die. < / P > < p > nevertheless, there is hope. The freezing of the ocean starts at the surface, and in fact, when the surface freezes, it is isolated from the bottom. It takes thousands of years for the ocean to freeze to a solid state, which means that some creatures can manage to stay deep in the ocean for thousands of years, especially where volcanoes are active to keep warm. In theory, with plenty of time, we might be able to build an underwater habitat in the deep sea as a refuge. The other option is to go directly underground. For every kilometer down to the center of the earth, the temperature drops about 25 degrees centigrade on average. Even if the surface temperature drops to minus 200 degrees Celsius, we “just” need to dig down thousands of meters to bathe in the relative heat from the core. The heat energy from the earth’s core is the ultimate weapon to save mankind. Our available resources are based on solar radiation, and once they are far away from the sun, they can no longer be used by us. The core, driven by radioactive decay, will continue to burn for billions of years to come. Human beings can use it directly through fission reactor or indirectly through geothermal energy. < / P > < p > first of all, determine the existing human ability to excavate the earth’s crust and excavate a site large enough to build underground dwellings. Drilling companies may have a big demand in this program! Governments around the world need to integrate resources and candidate sites around the world. The acquisition of existing geothermal resources may be a good starting point. < / P > < p > next, start digging. Dig out temporary “camps” in shallow areas and continue to dig down for future transfers. At the same time, each future settlement should be equipped with the resources needed for future survival. Deep underground, oxygen and clean water are the challenges we will face. However, with artificial light and proper preparation, underground crop cultivation will become possible. We may have to say goodbye to meat, because even if we can raise some animals for the sake of others, it does not make efficient use of resources. < / P > < p > at some point, people will develop a selection mechanism to determine who can take refuge in underground settlements. This kind of thing is very difficult to do. Most people will stay on the surface and freeze to death. Once this choice is completed, the selected group can go to the hinterland of the earth and start a new underground life. Will the < / P > < p > plan succeed? It’s hard to say. First, people have to dig deep enough, and that’s dangerous in itself. Second, strong seismic activity may destroy settlements. Third, in densely populated areas, the plague will be fatal to the entire population. Finally, problems with the supply of food or water can also destroy a group. In many cases, any underground settlement will fail, and such failure is almost doomed. However, with enough luck, perseverance and hard work, success will come to them, and these people can adapt to this new lifestyle in generations. They may even go so far as to hike back to the surface, explore frozen wasteland, and cross the ice to visit other underground settlements. In other words, they can even find a way to build a spaceship again, leave the earth, and try to take their families to find more livable places. < / P > < p > I raise this question because the word “vagrancy” sounds like a disaster at first, so before everything is settled down, it is important to take into account the ravages of the oceans everywhere. There is no precedent for such a thing, and a mile deep tide can set off a jolt. < / P > < p > after that, people will want to repeal all laws that limit and slow global warming. The next step is to invent something similar to photosynthesis under starlight. It has to be said that this work is very difficult, which means to say goodbye to plants, agriculture, food < / P > < p > seriously – though not necessarily! ——People may consume a lot of limited resources under very limited conditions to provide artificial lighting and heating for a relatively small number of people. That would mean leaving most of the world’s inhabitants – human and non-human – to die. At the same time, it means that thousands of people who are elected will have to bear the resentment of billions of hungry people who have not been elected. Continue ReadingAmerican companies begin to give up R & D: who should pay for corporate research?