The climate crisis is approaching, does mankind have no future? Now mankind has ushered in a new geological era, namely the Anthropocene. Humanity has become the most influential single species on Earth and has led to global warming and other changes in the land, environment, wat

The climate crisis is approaching, does mankind have no future? Now humans have ushered in a new geological era , namely the Anthropocene. Humanity has become the most influential single species on the planet and has led to global warming of and other changes in land, environment, water, organisms and the atmosphere. Although the exact beginning of this era is still controversial, it is undeniable that humans have the ability to change our planet and change other forms of life on the earth through human actions. The impact of humans on biodiversity constitutes one of the main features of the Anthropocene, and humans have entered the period of the sixth mass extinction sometimes called the Earth. Over the past 100-200 years, biodiversity loss and species extinction have accelerated, so that many species have entered a period of mass extinction, or are on the verge of extinction.

Is the climate crisis coming?

We not only caused the sixth mass extinction, but also had an irreversible impact on the climate. study found that the world is on the brink of five "catastrophic" climate critical points. What's going on? Critical point of the climate system - In climate science, the critical point is a key critical point. Once it exceeds the critical point, it will lead to huge and often irreversible changes in the climate system. While climate records are often broken, the cumulative impact of these changes can also lead to huge and irreversible changes in the fundamental parts of the Earth’s system. These "critical points" are a slight change that can push the system into a completely new state of threshold . Imagine a child pushing himself off the top of the playground slide. There is a critical point that exceeds this critical point, and it will be too late for the child to stop himself from sliding down. After crossing this threshold, the child will inevitably slide down quickly.

The last time the carbon dioxide content on our planet reached today's level was more than 4 million years ago, and we didn't take a long time to reach our current position. In just about 60 years, the annual growth rate of carbon dioxide in the atmosphere has been about 100 times faster than the previous natural growth rate. Before Industrial Revolution and all subsequent human activities, the global average CO2 content was approximately 280 parts per million (ppm). Today the level is close to 420 ppm. Every ton of carbon dioxide emissions will exacerbate global warming. This close correlation highly suggests that an increase in the emissions of anthropogenic greenhouse gas will lead to drastic changes in weather patterns, residences and biodiversity. The fact is that global warming is now causing many ecosystems in the world to become increasingly close to irreversible changes.

So far, the global warming caused by humans has exceeded 1.1C, and five dangerous tipping points may have passed. These include the collapse of the Greenland ice sheet, which eventually led to a sharp rise in sea levels, the collapse of the major currents of the North Atlantic , the interruption of rainwater on which billions of people depend for survival, and the sudden melting of carbon-rich permafrost. Analysts said that under heating conditions of 1.5C (which is the lowest increase currently expected), four of the five critical points changed from possible to possible. Also at 1.5C, five other tipping points may occur, including changes in the vast forests in the north and the disappearance of almost all mountain glaciers.

According to scientists' estimates, the researchers found evidence of 16 critical points in total, of which the last six require global warming at least 2 degrees Celsius to trigger. "The Earth may have left the 'safe' climate state of global warming more than 1C," the researchers concluded. The temperature of development of human civilizations is below this level. Passing through one critical point may often help trigger other critical points, resulting in a cascading effect. What's even more terrifying is that the climate crisis may even lead to human extinction

A shocking new study shows that the world needs to be prepared for human extinction caused by climate change. Scientists say global warming could have "catastrophic" consequences for humans if temperatures rise more than expected, or if the temperature rises trigger a series of unpredictable events in nature.In a report published in the Proceedings of the National Academy of Sciences, the Cambridge University International Research Team stated in a report published in the Proceedings of the National Academy of Sciences, that climate change may lead to the collapse of global society and even the extinction of human beings is a "dangerous underexplored topic."

Research article screenshot

Climate change plays a role in every mass extinction event. These events include cooling during the Ordovician-Silurian extinction about 440 million years ago, causing about 85% of species to become extinct, and warming during the Triassic- Jurassic- extinction about 200 million years ago, causing about 80% of species to become extinct. It also led to the disappearance of many ancient empires and shaped history, and climate change (either big or small) was at least partially responsible for the rise and fall of many ancient civilizations. Although Uba is now located in one of the driest places on the planet, the area used to be more wet and has abundant groundwater sources. When the water level drops so low, Ubar disappears.

Similarly, the Kingdom of Egypt collapsed in a drought 4,200 years ago. The drought was also related to the decline of the Mayans around AD 3 and the demise of Angkor Thom, Cambodia in the early 1400s. Even the modern world seems to adapt to a specific climate environment. The pathways of disaster are not limited to the direct effects of high temperatures, such as extreme weather events. Chain reactions such as financial crises, conflicts and new disease outbreaks may trigger other disasters and may even lead to the emergence of large-scale nuclear wars .

In short, the current climate problem is a very serious problem. If we can make changes in time, climate disasters will not happen and mankind can have a bright future. But if humans continue to do their own things, the climate problem will become more severe and terrifying. The above is what we have today. I am Huo Zongjun, see you next time.