I think it's real, and I think this is going to make things difficult in some places in the world. But I'm not expecting apocalyptic scenarios.
The human being already has technologies capable of allowing him to adapt to this, and maybe reverse the worst scenarios.
Global warming is the sudden increase of our earth's temperature. Global warming is really happening in our world now in fact it is getting many negative effect. One proof that global warming is really happening is when we observed that even it is rainy season, we can feel hot temperature in our surrounding. If this continue, there is a possibility that the arctic region can melt so many low lying areas may disappear.