The World Meteorological Organization recently announced that the concentrations of carbon dioxide, methane and other greenhouse gases in the atmosphere have broken their records last year. In particular, that of carbon dioxide has recorded the maximum extent of rise since 1957.

The main reason was the massive consumption of fossil fuels. The amount of environmental damage caused by greenhouse gas emissions from the world's five biggest oil companies in the last decade is reportedly more than US$5 trillion. Large-scale forest fires in different parts of the world, especially in the Americas, have also had a considerable impact.

The international community is becoming increasingly vocal in its concern about environmental destruction.

At the COP 30 in early November this year, heads of state of different countries insisted in their speeches that financial support should be strengthened for response to climate change and conversion to green energy.

The Brazilian president said that response to climate change should be the core of decisions of all governments, businesses and people, noting that people are suffering from drought, flood and typhoon due to the rise in global temperature. And he called for strengthening international cooperation in response to climate change this year marking the 80th founding anniversary of the UN and the 10th anniversary of the conclusion of the Paris agreement.

Saying that the greed of oil-, coal- and gas-producing companies is threatening the life of mankind, the Colombian president stressed the need to rapidly build the zero-carbon economy.

The UN secretary general, criticizing the investment of various countries in fossil fuels, said that the world failed to keep the extent of rise in mean global temperature below 1.5°C from the level before the Industrial Revolution.

As already known, the COP 21 held in Paris of France in December 2015 adopted an agreement, which specifies the obligation of each country to submit its greenhouse gas emissions reduction goal and verify its actual reduction every five years and the annual support of US$100 billion to developing countries by developed countries. The agreement also calls for promoting international cooperation to prevent the global average temperature from rising more than 1.5°C compared to that in the 1850s before the Industrial Revolution.

A research group published the results of its analysis that the global temperature would rise by 2.6°C above pre-industrial levels by the end of the present century, even if the measures for reducing greenhouse gases announced by various countries are fully implemented. It warned that more measures are needed to achieve the goals set by the Paris agreement, an international framework for coping with global warming.

The Australian meteorological agency stated in its recent national climate crisis assessment report that if global warming causes a 3°C rise in temperature above pre-industrial levels to make the sea level rise rapidly, 1.5 million families will be exposed to danger in the country in 2050 and over 3 million families in 2090.

Experts strongly call on the international community to make joint efforts to prevent global warming.