I agree with Jeff's comments in the 'cod farming' post about renewable energy and it's tendency to do so without using hydro. The recent report that 11,000 scientists have declared climate change as an immediate danger cannot all be wrong. Harking back to his comments, my biggest concern about our country is water. It has always been known as the driest island continent on the planet. We continue to increase the population while at the same time the scientists have convinced me at least, that we're going to have less water to go around in the future. Simply putting more dams on rivers and such does little more than kill the respective river/s. It doesn't provide more water, just more usable water and that's certainly not the answer. It's a temporary stop gap solution. Nor do I have an answer, other than less people and we can't simply kill off a few million/billion. The entire planet's biggest problem is again the number of people it has to support. The percentage of people with inadequate food, water and medicines is far too high to be ignored. Poverty has always helped generate violence. Being nothing more than an observation, I've heard criticisms of Aboriginals who boast that in 40,000 years they did no damage to this country, unlike our white people. Of course they didn't damage it. It was impossible to do so. There were too few of them. When I was young there were eight million people here. There's now about twenty six million. That's an incredible increase in one lifetime. Noel Another two bits worth of irrelevant nonsense.