This is one one of this topics that you heard so many times that you don't know what to believe. My opinion is that it exist but is not as bad as people think it is. There are enough evidence to show that the threat is real but, in the same time, there are plenty of argumens to debate that climate change is not real. Lets take about the first situation which is that climate change is real. A lot of scientist say that the ice fom north pole or Alaska is melting very rapadly. The obvious effect would be that the level of water is rising. Cities like: Miami, New York have annd other cities that are situated on the coast have a hard time solving this problem, because the real estate business wont have that many opportunities and the economy wont be as sustainable. The ones who argue that climate change is not real would say that is the biggest scam that the government has ever created just too scare people so the society will rely more on the govenment and to buy the products that protects them fom climate change such as: elctric cars, clean energy also known as green energy, etc... .
My personal opinion is that is real, there are plenty evidencs that show that s a threat to mankind but it's not as bad as the government or the society thinks it is. We should be cautious how many resources we use and how we use them, enspecilly in a industrial era.