There is no issue on the planet but over population. We can burn all the fossil fuel we want and build what we want if there were only 3 billion people. But 8 billion and growing is killing the planet. No one wants to talk about it because the only way to stop it going to be very strict crack downs on peoples right to reproduce. Even China had a hard time pushing it with all the power the state has over its people. The religious nuts go so far as to say once an egg is fertilized its a human. This is of course hog wash. As population grows it stresses out nature. We are seeing long line nets strip the oceans of life. That is just a fact. Blue Fin Tuna and some Shark species are in danger. People keep pushing into the wild areas taking more and more land for urban expansion and its giving wild life less and less to survive on. Farming is only kept going to supply the world with food due to petrochemical and corporate farming tactics. We have about 20 to 50 years of the way we are going before its a disaster. When we were at even 2 billion people the difference between rich and poor nations was drastic. The third world at the time lived very sustainable life's. Now people in the most poor countries want and have cell phones Internet, and other things that would have been thought impossible 50 years ago. China was a backward nation now its growing leaps and bounds and its people all want cars and homes and all the trappings of modern life same with India ect.
Global warming I have my doubts about. If it is a thing or as bad as some say I think it has a lot to do with cycles of warming and cooling of the earth by nature and sun cycles. But that said over population is causing issues every where. Extinction, food is limited, even during covid we saw how fast food and supplies can be interrupted. To expand food production we see deforestation in places like South America and others. as we push into arable lands and build more and more homes and other things we are using up our land faster and faster. 90 percent of all water used by humans is used for food production. We have no unlimited water source. Some Aqua-firs are closed and when out they stay empty. Some are not closed but replenish very slow. Making water from sea water is possible but costs a lot of time and money and people are used to water that is cheap. Nestle is buying up water rights everywhere in the third world as they see this as a good investment.
The man who predicted the 08 crash moved to buying high water produced vegetables and fruit stocks. There is a saying that one day will will have to give up our 3000 mile salads. It costs a lot of time water ect to move vegetables from Mexico or over seas or even California to other states in winter.
In the early 18th century most people in temperate climates did not see fruits like bananas or oranges ect. Oil has allowed us to live like kings. Now even poor in first world countries have TV, AC, cars cell phones and all the food they could want. Its just not sustainable.