Exclusive summary:
Nowadays, people around the world are affected by natural disasters. These may be caused by climate change such as drought, flood, and cyclone, the environment such as pollution, deforestation, desertification, pest infestation or combinations of these, or the destroy of ozone layer will contribute to the green house effect. People's homes are wiped out and livelihoods are destroyed. Poverty, population pressures and environmental degradation mean that increasing numbers of people are vulnerable to natural disasters.
In Australia, natural disasters such as floods, bush-fires and tropical cyclones occur regularly across the Australian continent. They cause more than $1.14 billion damage each year to homes, businesses
Almost 70% of the Australian Capital Territory’s pasture, forests (pine plantations) and nature parks were severely damaged, and most of the renowned Mount Stromlo Observatory was destroyed. After burning for a week around the edges of the ACT, the fires entered the suburbs of Canberra on 18 January 2003. Over the next ten hours, four people died and more than 500 homes were destroyed or severely damaged, requiring a significant relief and reconstruction effort.
 A Flood: is an overflow of an expanse of water which causes that water covers land which is normally dry.
 The flood in 1852 wiped out 71 buildings, and 89 of the town's 250 inhabitants died.
 Over one million square kilometres of Queensland and New South Wales (and a smaller area of Victoria) were flooded in April 1990. The towns of Nyngan and Charleville were the worst affected with around 2,000 homes inundated. Six people were killed and around 60 were injured.
 Queensland flooding a series of floods hit Australia, beginning in December 2010, primarily in the state of Queensland including its capital city, Brisbane. The floods forced the evacuation of thousands of people from towns and cities. At least seventy towns and over 200,000 people were affected. Damage initially was estimated at around Aus$1 billion. The estimated reduction in Australia's GDP is about Aus$30 billion. Three-quarters of the state