Of course, there will be people who will see Cyclone Yasi, the floods in Queensland and the floods in Victoria as just another one of those extreme weather events , rather than a sign of global warming. But have they noticed the extreme weather events in the Northern hemisphere (not to mention the flooding in Brazil recently)?
There have been intense cold weather events in many places, storms and flooding in others. And the last ten years have been the warmest on record.
Our survival depends on the weather. As it becomes more extreme, food production will continue to suffer.
We must begin to restore the environment. We must reduce the impact of human activity (which surely should include efforts to control and reduce our population).
We just have to hope that it's not too late to save ourselves and our children's future!
