Australia is already a world leader in dementia research, treatment and care.

Dementia is not exclusively a problem of the developed world.

Australia is a remarkable country with incredible technical and physical resources and a capacity to be a world leader in renewables.

America is a world leader, but we should not be its policeman or ATM.

I'm not sure how a world leader reacts to the work of a clown.

Advances in science and medical research and public health policies have meant that life expectancy for Australians is one of the highest in the world.