What makes people more likely to trust a climate change message? If it looks too corporate, it's more likely to fail.
When you think of steroid users, it's likely you picture a male in the gym with huge muscles. But all sorts of people use steroids for all sorts of reasons.
Today marks one of the biggest shake-ups in the history of measurement. But the new standards on how we define units of mass, length, time and so on are not easy to explain.
State and local governments can't do much about the rapid population growth in Melbourne, but they can take steps to reduce the costs of growing disparities between the outer suburbs and inner city.
The Coalition should not use this unexpected win to allow itself to be complacent and drift. It needs to work out its agenda for the next three years and how it allows internal debate.
Especially in Queensland, right-wing populist parties like One Nation and United Australia Party had a significant impact on how seats played out, and especially taking votes from Labor.
The result in Warringah can be seen as being fought on local issues, where the former prime minister had come to be out of step with his constituents.
Labor's defeat revives a familiar problem in Australian political history: the left's inability to show how its policies can improve people's material conditions.
How did the numbers of election 2019 fall across the country? And what seats are still in play?
This result, which is vastly different from what opinion polls were indicating, shows the probability of "herding" in polls, and also emphasises that betting odds are to be treated with great caution.
Now that the Coalition has won the federal election, how will it meet its campaign promises on taxes, the environment, education, health and infrastructure?
We now wait for the final count of seats in the House of Representatives and the Senate - and in the meantime, government continues.
The outcome is completely opposite to the polls, which all had Labor ahead going into the election, albeit narrowly and with some tightening during the campaign.
How much does your socio-demographic background such as income, type of work and where you were born affect who you vote for? Quite a lot.
What are the key policy issues on which the 2019 federal election will be fought?
No present leader touches Hawke for charisma, popularity or communications skills, even leaving aside the larrikin history.
What if Bob Hawke, hailed as a leader who actually 'got' environmental issues, had never been rolled by Paul Keating? Perhaps the climate policy wars would have turned out differently.
After five long weeks, the campaign is drawing to a close, with the polls still pointing to a narrow Labor win, with lots of unknowns in the detail.
Bob Hawke had a huge influence on Tim Harcourt deciding to become an economist. He looks back on a man who shaped a career, and a nation.