If everyone lives like a developed first world person then you need three earths to sustain the demand of resources.
The worlds population is growing and getting faster and faster.
The planet is getting raped of its resources...with more humans on it, more pollution etc it is no wonder there are strange natural events occurring.
Cockroaches will rule the earth soon as they will be the only survivors. I pity the next few generations...it is just going to get worse.