A welcome trend has seen designers, manufacturers and consumers becoming increasingly aware of what is wasted, whether that be the left-over materials in producing a product for sale, or once sold, the product itself when we are tired of it. Just think of all those clothes we throw out, not to mention the computer screens...

Is it morally permissible to impose strong patent protections where doing so prices important new medicines out of the reach of many poor people? This week on The Philosopher's Zone, Thomas Pogge, professor of philosophy at Yale University, talks about the morality of the global trade in medicine.

We've heard a lot lately about the ill health and social difficulties of Aboriginal communities in some remote regions of the country and the government's response to them. What we haven't heard much about is how the environment in which Indigenous people live: the houses, schools, hospitals and community centres impact on physical and mental...