The once-science-fiction notion of hyper-connectivity - where we are all constantly connected to social networks and other bubbling streams of digital data - has rapidly become a widespread reality.

Democracy isn't solely about polite conversations in parliaments. It needs to be continually refreshed with raw passions, anger and ideals.

The most important innovators often don't need any technologies - just imagination and acute sensitivity to people's needs.

Adelaide is becoming a hub for higher education.

Systems governed by only one set of rules are more vulnerable than those with variety.

Spreading an idea is hard work.

Science is, rightly, searching for drugs to arrest ageing or to slow the advance of dementia. But the evidence suggests that many of the most powerful factors determining how you age come from what you do, and what you do with others: whether you work, whether you play music, whether you have regular visitors.