To understand how much thinking a brain can do, look at how much blood - and therefore how much energy - it uses.
Humans evolved through a series of highly unlikely events – so finding another intelligence like us would be like winning the lottery many times over.
We have not been able to develop an intelligence workforce that can keep up with the speed of advancing technologies and their threat to our national security.
We don't know for sure which one is smarter, because not everyone agrees on what "intelligence" means. Both have their own special behaviours and skills and we can't say who is more intelligent.
Plants clearly lack brains but does all intelligence have to look like our own?
Previous studies that explored whether chess improves children's cognitive abilities have had mixed results. We found playing chess wasn't linked to better standardised test scores.
A new report has found a major gender gap persists in Australia's diplomatic, defence and intelligence fields. Australia needs good ideas, and we cannot assume they will all come from the same place.
Cutting Huawei out of the picture would limit Western access to new, state-of-the art technology.
Cyber attacks need two components – the tools to exploit vulnerabilities and the people with the expertise to deploy them.
The effort to edit the genes of Chinese twins implies that all our traits are determined by our genes. But changing our diet, environment, lifestyle and microbes may have a greater effect.
The legislation also will enable the Foreign Minister to specify extra people, such
as a hostage, who may be protected by an ASIS staffer or agent.
Genetic research on human behaviour has long been linked with eugenics and continues to attract interest from far-right groups.
Genetics play a large role in how well someone does at university.
The Skripal case shows how Russian intelligence services have the confidence to carry out shoddy operations, seemingly unconcerned about whether or not they will be discovered.
The axing of the prosecutions head follows sweeping changes to other king positions in the security cluster by President Cyril Ramaphosa.
Underage police informants can't necessarily be trusted to provide accurate information, so why compromise their safety?
Intelligence agencies must be incorruptible and 'speak truth to power' to be of any benefit to policymakers and the communities they serve.
New evidence that old beliefs about people with conditions that prevent them from speaking or moving are not always right.
A new study shows how even having a few intelligent people in a group can benefit others.
It's increasingly difficult for investigative journalists to hold governments to account – partly due to anti-terror and security laws making it harder for whistleblowers to act.