Global Environmental Problems

In modern day society global problems seam seemingly irrelevant , thou slowly but sourly we start to notice them, for example Global warming scientists started to warn us about global warning before 15 years but only now we start to realize what effect it brings to us , or how we tooth hunger only effects third world country's but now we see that more than 1 billion people suffer from hunger. I think the next big problem we will face is over population which we can see is starting to get effect just now.