History is a mirror. From the 1960s to the 1970s, the earth was undergoing a baptism of cooling. At that time, a "cooling theory" was prevailing internationally. The world was facing a small ice age and the temperature would continue to drop. In response to this "cooling theory", governments at the time did not take action to slow down or prevent continued cooling. Now, the international community is popular with the global climate "warming theory", what should we do? If a little action was taken to raise the global temperature, it is hard to tell whether it is credit or fault. Science obviously cannot be promoted by any form of "consensus", but should be based on objective and serious research. Based on this, can you judge? ['Nowadays the global "warming theory" is more truthful than "cooling theory".', 'The international community should not take any action to slow or stop the global warming theory.', 'For global climate change, further objective and serious scientific research is needed.', 'If scientists and politicians reach a consensus within a certain range, they can advance science.']