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Substances, such as these carbon nanotubes, can behave differently at the nano-scale, and may post a health risk. ZEISS Microscopy/Flickr

Big questions about risk assessment of nanomaterials

We need to carefully assess nanomaterials to ensure their safety, but there are questions over whether the existing practice of risk assessment is up to the task.
The ABC has, in general, been able to withstand the pressures and (less common) interventions of governments or media barons. AAP/Joel Carrett

Cost of Q&A compromise to ABC independence remains to be seen

The history of the ABC reveals battles lost and won around censorship, concessions made in times of crisis and independence compromised or overturned.
The idea of ‘family balancing’ is based on the belief that children come in two genders that have essentially different traits. Jason Pratt/Flickr

Choosing children’s sex is an exercise in sexism

The risk of harm in sex selection stems from the fact that parents don’t desire any child, they want a child of a particular sex, who is to remain within the limits of binary gender roles.
Should parents be allowed to select the sex of their child through IVF when there’s no compelling medical reason to do so? Marcus Hansson/Fkickr

Why we should consider whether it’s time to allow sex selection in IVF: NHMRC

The National Health and Medical Research Council call for public submissions on whether sex selection should be allowed without a medical reason recognises changing social attitudes.
A boy contemplates the guns handed in during an amnesty for gang members in Panama City. How do communities respond to violence? InSight Crime

Preventing violence: maybe communities know better

Many communities struggle with crime, violence and abuse, but they are not all the same. Those that look to local expertise for solutions offer hope in a world where success in preventing violence is rare.
Scaling back our collective overuse of electricity would create a huge resource that can be tapped for future power needs. Weerayut Ranmal/Shutterstock.com

Cutting back on wasted electricity is the cleanest power source of all – as our household shows

A few years ago, I couldn’t read an energy bill beyond the charge levied. I couldn’t tell you how energy was measured, or ultimately how its use related to making my life better or worse, let alone how…
Prospective uni students often talk about “wasting their ATAR”. Don’t worry about that, it’s not a thing. from www.shutterstock.com.au

Five things to think about when choosing a university course

How do you choose the right university, or the right degree? The whole process can seem daunting. What should you focus on? How do you weigh up the different elements involved?
Then CEO Bill Gates at the Microsoft campus in the US, a day ahead of the launch of Windows 95 on August 24, 1995. Reuters/Jeff Vinnick

Windows 95 two decades on: but why all the upgrades?

Today marks the 20th anniversary of the launch of the Windows 95 operating system. What was it that made the operating system so special, and why all the upgrades over the years?
Leader of The Greens, Richard Di Natale, speaking on ABC TV’s Q&A program. Q&A

FactCheck Q&A: Will India no longer buy Australian coal?

Richard Di Natale, leader of The Greens, told the Q&A audience that India will no longer buying Australian coal but presenter Tony Jones said he thought that was wrong. We check the facts.
We’re more likely to recall memories and information we’ve used frequently rather than those obtained at a particular age. Kristo-Gothard Hunor/Shutterstock

Passage of time: why people with dementia switch back to the past

People with dementia judge the passage of time differently, and can access remote memories from many decades ago while being unable to remember events of the past few hours.
Greater Australian air commitment to the campaign against Islamic State is a low-risk venture, militarily. AAP/Australian Defence

Australian planes are set to wing it over the Syrian cauldron

While symoblic, an increase in Australian firepower in the fight against Islamic State in Syria will not greatly affect the battlespace’s fundamental reality.
Dyson Heydon prided himself throughout his judicial career on the robust independence and intellectual integrity he brought to the role. AAP/Renee Nowytarger

Bias and the ‘black-letter’ judge: who is Dyson Heydon?

How has a former judge with an avowed commitment to judicial independence and probity found himself at the centre of a very public controversy over his own impartiality?