Until the 1990s, people realized th

Until the 1990s, people realized that due to the long-term use of fossil energy such as coal, oil, natural gas and so on, which led to the shrinking of oil resources and global warming and other issues, and actively developed and used renewable clean energy, reduced the consumption of fossil energy, reduced the emission of greenhouse gases has become the consensus of all countries in the world to alleviate the energy crisis and climate change.