And these weather patterns happened before the last Ice age too, and would of increased with frequency like they are now. So this is no worse than before, either. It's not just us that can generate greenhouse gases. They are naturally occurring. And it's this that alters the weather patterns
Two things;
1. If we are talking about an increase in natural disasters "recently", I don't think saying "well it happened before the last ice age too" is much help.
2. Be honest, you're just talking bollocks and hoping a solid argument will form along the way.