I think yes, global warming really happened and has been going on for quite a long time.
I live in a country that has a tropical climate and has very fertile land that has lots of plants but because of this global warming there is now a lot of drought on our land so that many trees and plants are drought and dead.
Of course there are many more impacts that occur due to global warming, we can see a lot of news about global warming on various television media or news in our newspapers.