Polonium is found naturally in uranium ore.
Polonium's chemical properties made it the ideal secret weapon for the assassins of Alexander Litvinenko.
The national flower of Zimbabwe, the Glory Lily, is also found in Queensland where it’s more famously known as a noxious weed that’s highly poisonous to humans.
It's not just Australia's animals that can be deadly, there are plenty of dangerous plants too.
Why asbestos removal is still on the news.
Asbestos is not a thing of the past, far from it – it's use is exploding in the developing world and many others are still at risk.
Arthur Conan Doyle himself was also poisoned by heartbreak grass – but this was self-inflicted, and not fatal.
There's much that Perepilichny could have learned from Arthur Conan Doyle, and him in turn from an ancient king called Mithradates.
Poisoning dingos - Australia’s top predator - is actually decreasing numbers of small native mammals such as bandicoots and…
Nine years after his death, Yasser Arafat’s remains have produced even more questions.
A Swiss forensic report of the exhumed remains of ex-Palestinian leader Yasser Arafat today suggests polonium poisoning may have been the cause of death – but what is polonium, and why is it so deadly…