Those who condemn gay marriage, yet are silent or indifferent to the breakdown of marriage and divorce, are, in my view, missing the real issue.

On balance, after weighing the arguments, I believe that the time has come for Australia to create a new sovereign wealth fund.

When politicians offer you something for nothing, or something that sounds too good to be true, it's always worth taking a careful second look.

People learn from failure or from lack of success.

The way to lose weight is to eat less, so I ate a lot less for a month and lost a lot of weight pretty quickly.

In economics, one of the most important concepts is 'opportunity cost' - the idea that once you spend your money on something, you can't spend it again on something else.

Climate change is a global problem. The planet is warming because of the growing level of greenhouse gas emissions from human activity. If this trend continues, truly catastrophic consequences are likely to ensue from rising sea levels, to reduced water availability, to more heat waves and fires.