I find it debatable that global warming is anthropogynesic. I agree that there is an increase in average temperatures, and there is an increase in human emissions of carbon-containing products. But global warming and global cooling is a frequent event if you think throughout the history of the earth. And there is a possibility that the decrease in average temperature and the decrease in the nitrogen layer is just part of another such cycle. To accurately assess the human impact, you need to calculate the exact amount of CO2 emissions from human and non-human causes over at least a few decades and see what the correlations are with temperature.
There is an opinion that in the academic environment global warming is a trendy hot topic for which large grants are allocated, which is why there are more and more scientists who are interested in this topic only from one side, and less and less opposing voices are heard.
But I don't really want to discuss this particular aspect, let's say it's not just a coincidence, and for the sake of simplicity I can just agree that global warming is man-made.
And I'm more interested in understanding why is global warming a bad thing?
Global warming means a increase in average temperature, the summer time will increase turning the earth into a greenhouse and as a consequence a greening of the planet, more forests, more plants. More acceptable climate for flora and fauna. A rise in temperature doesn't automatically turn everything into a desert, it's the lack of moisture that turns everything into a desert. And with as much water as there is on earth, it is impossible for the entire earth to turn into a desert like Mars. Global flood due to melting glaciers? Even if the average ocean level rises it will cause a backlash. Because the ocean is a giant cooling system for the earth and more water means more cooling. And in 100 years of industrialisation we don't see a significant rise in water levels.
In addition, the melting of even all glaciers will not lead to the loss of all land. Yes, we may lose some part of the land off the coast. But the majority of glaciers are already in water or replacing water, so most of the water from them will fill the same voids from which they melted. And even if there is an increase in water levels, it will not happen suddenly. People will be able to move to regions further from the coast.
In my opinion, what is truly worth worrying about for humanity is global cooling, what if glaciers grow throughout the planet. Some scientists agree that this is possible and that this is part of the already existing theory of earth temperature cycles. Imagine a glacier all over the earth, plants and animals are extinct, there is no food, how to survive?
There is an opinion that in the academic environment global warming is a trendy hot topic for which large grants are allocated, which is why there are more and more scientists who are interested in this topic only from one side, and less and less opposing voices are heard.
But I don't really want to discuss this particular aspect, let's say it's not just a coincidence, and for the sake of simplicity I can just agree that global warming is man-made.
And I'm more interested in understanding why is global warming a bad thing?
Global warming means a increase in average temperature, the summer time will increase turning the earth into a greenhouse and as a consequence a greening of the planet, more forests, more plants. More acceptable climate for flora and fauna. A rise in temperature doesn't automatically turn everything into a desert, it's the lack of moisture that turns everything into a desert. And with as much water as there is on earth, it is impossible for the entire earth to turn into a desert like Mars. Global flood due to melting glaciers? Even if the average ocean level rises it will cause a backlash. Because the ocean is a giant cooling system for the earth and more water means more cooling. And in 100 years of industrialisation we don't see a significant rise in water levels.
In addition, the melting of even all glaciers will not lead to the loss of all land. Yes, we may lose some part of the land off the coast. But the majority of glaciers are already in water or replacing water, so most of the water from them will fill the same voids from which they melted. And even if there is an increase in water levels, it will not happen suddenly. People will be able to move to regions further from the coast.
In my opinion, what is truly worth worrying about for humanity is global cooling, what if glaciers grow throughout the planet. Some scientists agree that this is possible and that this is part of the already existing theory of earth temperature cycles. Imagine a glacier all over the earth, plants and animals are extinct, there is no food, how to survive?