In terms of energy sources, the world's carbon dioxide emissions
Looking at the world today, carbon dioxide emissions are related to the world's climate, human habitat, and the most important thing. It comes from various energy sources, and the analysis can be clear about the situation, which is the basis for governance and policy.

There are three main categories of energy sources: fossil energy, renewable energy, and nuclear energy. Fossil energy, ancient biomass has been permanently transformed by geothermal heating, and it is a major energy user today. It contains coal, oil, and natural gas. Coal has a high carbon content, and when it is burned, it emits huge amounts of carbon dioxide. Looking at the world, in the past, coal was used as a source of power. Factories and power stations used to burn coal, and thick smoke billowed, and carbon dioxide rose into the air with the smoke, causing its concentration in the atmosphere to gradually increase. Petroleum is mostly used in the field of transportation. It is used for fuel such as cars and planes, and the carbon dioxide in the exhaust gas is also a large emission. Although natural gas is cleaner than coal and oil, it also produces carbon dioxide when burned. These three are great contributions to human development, but their carbon emissions cannot be ignored.

Renewable energy, such as solar energy, wind energy, water energy, biological energy, etc., are inexhaustible and inexhaustible, and have little carbon emissions. Solar energy, light to electricity, has no worries about carbon emissions; wind energy, wind-powered power generation, has no pollution in the atmosphere; hydropower, damming drainage, does not increase carbon when generating electricity. Bioenergy, biomass combustion or fermentation to obtain energy. Although there is carbon emission, it absorbs carbon during growth, which is less net carbon emission than fossil energy. In recent times, countries have gradually increased the use of renewable energy, increased investment, and advanced technology, and its share of energy consumption has also gradually increased.

Nuclear energy generates heat and power by nuclear reaction. Its process does not emit carbon dioxide, but it is difficult to dispose of nuclear waste and the risk of nuclear accidents. Use it with caution and be strict.

To reduce carbon dioxide emissions, we must adjust the energy structure. Increase the use of renewable energy and reduce the dependence of fossil energy. Research and development technologies to make renewable energy efficient and low-cost, and widely available in the world. For fossil energy, improve the efficiency of its use, control the amount of emissions, research carbon capture, storage techniques, in order to eliminate its harm. In this way, we can slow down the climate change, and ensure the peace of the world and the peace of the people.