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Sun and wind are intangible. It’s hard to sell them. But the State can make big money if it owns fossil fuels. Rory MacLeod

Should we extend property rights to the atmosphere?

While Australia aims to produce a fifth of its energy from renewable sources by 2020, non-renewable energy is still flourishing. But non-renewable energy sources such as coal and gas have a significant…
There’s a public appetite for more science … so how should it be sated? London Permaculture

And in science news … can we have more science news?

Why is science not delivered as part of our routine news bulletins in the same way as, say, business and sport? Enter a group from the University of Queensland, who yesterday posted an open letter to radio…
Kevin Rudd’s asylum seeker policy will resettle refugees in PNG. So what will their life actually be like? AAP/George Curry

What life can a resettled refugee expect in PNG?

Prime minister Kevin Rudd’s plan to resettle asylum seekers in Papua New Guinea is already being compared to John Howard’s hard line on the Tampa, which won Howard the election in 2001. It might be good…
Memories of emotionally-dense events are formed in great detail, allowing them to be remembered extremely vividly, Julie Falk

Making a mark on the brain - how emotion colours memories

All memories aren’t created equal. Whether you remember an event the next day, week or year, depends on a number of factors, the most important one of which is the emotion associated with it. Emotional…
Introduced animals are a huge problem in conserving Australian species, but there’s no proof hunting helps. Beppie K/flickr

Hunting game gets new rules in NSW, but should we play at all?

The New South Wales Government will allow hunting to continue in national parks from October, after disbanding the state’s Game Council earlier this month following a scathing review of how it was being…
Can Rudd’s asylum seeker policy be considered a ‘success’ if it only speaks to Australian self-interest? EPA/Tubagus

Defining ‘success’ in the asylum seeker debate

If prime minister Kevin Rudd’s recent decision to process and then resettle all onshore asylum seekers in PNG is to be considered in any way a “success”, then it raises the question of what constitutes…
How much food you eat is driven by internal physiological signals (hunger and satiety) as well as external ones such as portion size. marya/Flickr

Portion size affects how much you eat despite your appetite

Think about the last meal you had, and ask yourself why you ate as much as you did, not more or less. Chances are that your answer had to do with how hungry or how full you were. But that’s not the whole…
The fringe benefits tax (FBT) statutory formula method was a tax concession. AAP

The truth about FBT on cars: meaningful tax reform is hard

If we needed another example of just how difficult meaningful and principled tax reform is in Australia, we got it recently in the reaction to the Government’s announcement that it would abolish the “statutory…
Kevin Rudd could look to the processes in Europe for a properly regional solution to asylum seekers. EPA/Adrian Elang

What would a truly regional asylum arrangement look like?

The recently-signed deal between Australia and Papua New Guinea on refugees is being promoted by the Australian government as a “regional settlement arrangement”. But it is really? And how does it compare…
Research showing no effect on antisocial behaviour after playing violent videogames (such as Call of Duty: Black Ops) should not be discounted. hmomoy

Violent videogames: why the ‘null effect’ shouldn’t be shot down

The debate over the impact of playing violent videogames on aggressive attitudes and behaviour is a long and heated one. Based on my research, I would argue the link is not as straightforward as A + B…
Improvements in newer climate models have resulted in larger uncertainties in future climate projections. Are climate models flawed and getting worse? NASA Goddard Space Flight Center

There are no time-travelling climatologists: why we use climate models

The first climate models were built on fundamental laws of physics and chemistry and designed to study the climate system. Now, the use of climate models is heated ground in the public discussion of our…
Barack Obama’s comments that murdered teen Trayvon Martin ‘could have been me’ continue a long trend of Obama using ‘intimate politics’. EPA/Shawn Thew

Obama, Cameron and Trayvon Martin: ‘Boyz n the Hood’?

Barack Obama’s “Trayvon Martin could have been me” speech has been heralded as a political landmark. American commentators have lauded its seamless fusion of different voices: “a president, an African-American…
Kevin Rudd has cemented himself as the leader of the Labor party if it wins government for a third term. AAP/Paul Miller

Rudd tweaks his party reform blueprint

Kevin Rudd has made a minor concession in his sweeping reforms for the future election of Labor leaders, endorsed by a special caucus meeting today. The “trigger” for a leadership spill in opposition will…
The health and wellbeing of Australia’s principals is in doubt after a new report released this week. Stressed image from www.shutterstock.com

Bullies, threats and violence: who would want to be a school principal?

School principals are five times more likely to face threats of violence than the general population, and seven times more likely to face physical violence, according to a new report released today. The…
Former Goldman Sachs trader Fabrice Tourre is facing civil fraud charges arising from the global financial crisis. AAP

Calling bad bankers to account

The modern financial system continues to have its doubters among rank and file investors and savers. The painful memories of the volatility and dislocations caused by the global financial crisis are still…
Natural disasters are just part of the wider and more systemic threat of climate change to human health and survival. Image from shutterstock.com

Why climate change should be a key health issue this election

Our perennial, ideologically-driven squabbling over whether and how to reduce carbon emissions is generally couched in terms of GDP, jobs, commercial competitiveness, household expenses and property safety…
Understanding how the world works as a system is vital. Rigmarole

Does science literacy matter? Yes, and here’s why

When the email notice for The Weekend Conversation landed on Saturday, I was intrigued and slightly startled by the opening teaser from the site’s Science + Technology editor, Paul Dalgarno. He got one…
It’s hard to imagine a future without fossil fuel, but sound modelling can help. Dave Clarke

Carbon tax dumped: how do we get to 100% renewable energy?

The Federal Government has sparked significant debate with the confirmation it intends to move from a fixed carbon price to an emissions trading scheme next year. But where is the description of the long…
We’re comfortable buying things we can touch, but we can get used to a market in intangibles. Jeremy Brooks

Can there be a ‘free market’ in carbon?

Many are puzzled by the political theory of carbon markets. Why does the Institute for Public Affairs – a libertarian think tank – oppose a market in carbon? Tim Wilson, for example, thinks that private…
Liberal candidate Peter Hendy has a lot of federal support in his campaign. AAP/Alan Porritt

The Eden-Monaro project: The campaign for Eden-Monaro

Though the date is now in flux, then-Prime Minister Julia Gillard’s decision to announce the election months in advance has meant the campaigning in Eden-Monaro began some time ago. There are already six…
Asylum seekers coming by boat to Australia is on the increase but do they make up 20% of our migration program?

FactCheck: are boat people now 20% of our immigration program?

“The numbers have spiked. Twenty per cent of Australia’s immigration program now comes to our shores courtesy of people smugglers… You’re dealing with a very different situation when you’ve got what could…
Kevin Rudd is back as prime minister. But can he change party rules to prevent leaders being ousted as he was in 2010? AAP/Dan Peled

Labor in vain: will the Rudd party reforms work?

Today, a specially convened meeting of the Labor caucus will decide on proposed changes to how the party selects its parliamentary leader. The politics of leadership in Australia have been described as…
After years of grappling with asylum seeker policy, Kevin Rudd has announced that boat arrivals without visas will now be resettled in PNG. AAP/Dan Peled

Australia and asylum seekers: where do the Rudd reforms leave us?

Most Australians will judge Kevin Rudd’s newly announced plan to deny asylum seekers who arrive by boat the right to settle in Australia to be a success if it leads to a reduction in the number of boat…