Pepper spray uses a chemical called capsaicin. It's the same compound that makes chillies hot, but in a more intense, weaponised form.
Trump's recent comments echo a troubled history of the use of dogs against people of color, as well as pejorative depictions of people of color as animals.
One hundred years ago, the inventor of the most deadly weapon of the 20th century was born in Russia. Now more than 100 million of his namesake guns have been manufactured and used around the world.
There is no weapon more visceral than the bayonet. It encourages an intimate form of killing, and during WW1, Australia troops plunged, parried and stabbed with great vigour.
A community driven approach to border patrol could be more useful than providing arms for border guards
Each spin of the news cycle hits us with another 'bombshell,' while everything from free speech to race has been 'weaponized.' What's the effect of being relentlessly exposed to metaphors of war?
The UK Court of Appeal ruled that the British government did not properly assess whether Saudi Arabia had violated international law. What this means for the arms trade.
Science fiction has made us vigilant of 'killer robots' in our midst, but they're far closer than many of us realise.
Trump claimed that 'we would be punishing ourselves' by using US arms sales to Saudi Arabia as a bargaining chip over the disappearance of Khashoggi. A look at the arms trade shows why he's wrong.
We already have some autonomous weapons – so talk of any ban should focus on where we draw the line on what is acceptable, and what is not. Can we at least agree on that?
One hundred years after its capture from the battle fields of France, the last German battle tank of its kind is giving up its secrets to archeologists and forensic analysis.
AI has caused a "techlash" against Google. These principles are first step, but more needs to be done.
The science behind the famous World War II attack masterminded by Barnes Wallis.
To justify giving police military-style weapons, there must be both a credible threat and an identified deficiency in current police capabilities.
Canada used to be more careful about selling arms to countries that practised human rights violations. What happened?
The Campaign Against Killer Robots has launched a terrifying film showing why lethal drones need to be banned.
Australia is playing a major role in developing legal guidelines that would govern how any war in space is played out. The authors of MILAMOS hope the manual is never actually required.
Robots are a twin-edged sword. Used badly, they may one day perpetrate genocide and war crimes. Used well, they can prevent them.
South Africa's President Jacob Zuma seems to be making a final push to secure the nuclear power deal before his tenure comes to an end. But it won't be easy.
It's too easy to blame gang culture.