Why is it so?

My country, Australia is being ravaged by floods, lives are being lost.
First it was New South Wales, then Western Australia, Victoria & now Queensland, with Tasmania bracing for more of the same.
Whats going on?
They say it is largely due  to La Nina weather effects, the sea temperature is at an all time high.
Yet if you listen to the media there is no mention of Global warming?
Why?
Are we meant to just bury our heads in the wet sands?
Do we just continue breeding like there is no tomorrow?
What does it take before people sit up and take notice?
We cannot continue in this way.
We can't all live in a brand new home, or drive a brand new car.
I remember watching some show a few years ago that predicted weather just like we are experiencing now.
We can remember someones birthday, but we can't remember to turn that light off, or walk instead.
How devastating it is - our coal mines are closed because of the weather - no more coal to China for them to burn in their 100's of power stations - each one belching out tonnes of CO2. What a shame.