The immune system protects us from the constant onslaught of viruses, bacteria and other types of pathogens we encounter throughout life. But it can sometimes misbehave.
Keeping an eye on who’s gone missing.
Empty classroom via wavebreakmedia/www.shutterstock.com
There is no consistent system for recording and reporting children who are removed from school registers.
Breaking down the colours in the star light can reveal more about what you are looking at.
Flickr/Indigo Skies Photography
Astronomers can tell a whole lot more about a star or a galaxy if they break up the visible light in a rainbow of colours.
Creutzfeld-Jacob disease occurs in about one to two in every million people each year, most often in late middle-age.
News that a Sydney man has contracted Creutzfeld-Jacob disease serves to highlight that we still don't know how to prevent a disease that most often goes unreported, and unremarked on.
A bad business.
Brazil is being rocked by a graft scandal of titanic proportions. Could it bring down Dilma Rousseff?
The government’s bill introduces three means for revoking a dual national’s Australian citizenship under amendments to the Australian Citizenship Act.
Should the bill be enacted in its current form, Australian citizenship will be able to be stripped from dual nationals by bureaucratic determination for conduct that is defined with reference to the criminal law.
Under certain conditions, war may be morally permissible, or even necessary.
EPA/Said Yusuf Warsame
Political leaders frequently invoke Just War Theory to ground their explanations of why they are waging war against another state and how they plan to do so. What are the key components of this moral position?
Debate over potential pollutants calls for better tools to measure air quality.
Health effects from contamination on planes is controversial, not least because we don't measure on-board air quality during 'fume events'.
Immigration Minister Peter Dutton will have the sole power to strip dual nationals of their Australia citizenship if they are believed to be involved in terrorist activities.
Simply having judicial review for the contentious power to strip citizenship from dual nationals suspected of involvement with terrorism – without independent merits review – is far from reasonable.
Running the world's largest particle accelerator requires a lot of energy, but it could reveal the secrets of the universe.
Bill Shorten has introduced a bill into parliament to amend the Marriage Act and allow same-sex marriage in Australia.
The legislative reform required to allow same-sex marriage is not complicated. There is relative consensus as to how this can be achieved.
A man undergoes “xenodiagnosis” for Chagas disease in the Argentine province of Corrientes. In this procedure, uninfected triatomine bugs feed on the blood of patients. Later examination of these insects may reveal parasites acquired from infected blood.
This parasitic infection is endemic in Central and South America, and can lead to serious health complications. Though rare in the US, incidence is starting to increase.
What is an H-index and how is it calculated?
A previously obscure scholarly metric has became an item of heated public debate, thanks to Bjorn Lomborg. So what is an H-index and how is it calculated?
‘A smiley face? Seriously?’
Counting tens of thousands of paper votes is no small task. How does the UK get it done?
On the job.
MPs' responsibilities and freedoms have shifted a lot in recent years – and their job has only gotten more complex.
The recent wild weather dumped more than 100 mm of rain on Sydney in a day.
AAP Image/David Moir
The recent wild weather that lashed New South Wales has been described as 'once-in-a-century'. But how often does it really happen?
For 10% of patients the disease will return.
Breast cancer is one of the most common cancers in the Western world, with 15,000 women (and about 70 men) diagnosed each year in Australia.
How do we think about something we can’t see and don’t experience in our everyday lives, but seems to be pushing our universe apart ever faster?
NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team
Einstein's theory of gravity says dark energy must be out there, accelerating the expansion of our universe. But what is it and how can we try to figure out more about it?
It’s (reverse) auction time for the government’s emissions-reduction plans.
The federal government is holding the first reverse auction to award contracts for its Direct Action emissions plan. Here's how it will work.
The process of therapy is challenging and takes courage.
If you or someone you care about experience an emotional problem it won't be long before you hear that cognitive behaviour therapy, or CBT, is probably the treatment of choice.