Periodic Table

Famous as the colour of blue glass and important in red blood cells, cobalt can form a permanent magnet and is vital for livestock. Allan Blackman from AUT talks about his favourite element in ep 21…

Chromium is a transition metal that gives colour to precious jewels, the shine to your car fender and your kitchen bench, but can also be a killer. All this and more in ep 20 of Elemental with Allan…

Chlorine is the culprit in the 'case of the exploding trousers'. It is also well-known as a disinfectant and chloride ions are essential for life, but as DDT & CFCs, chlorine is bad news. Allan…

Cerium is the most abundant rare-earth element and pops up in self-cleaning ovens, cigarette lighter flints and spectacle glass. Find out more with Allan Blackman from AUT in ep 18 of Elemental.

Carbon underpins life as we know it, fuels our world and gets its own branch of chemistry, according to AUT professor Allan Blackman, in ep 17 of Elemental.

Calcium creates objects that are strong and beautiful, from caves, to teeth and bones, and coral reefs. Find out more in ep 16 of Elemental, with Allan Blackman from AUT.

A second, the basic unit of time, is defined by caesium, which is also useful for dating things. Find out more about caesium's role as a timekeeper, in ep 15 of Elemental with Allan Blackman from AUT.

Cadmium has featured in red traffic lights, rechargeable batteries and now has a role in quantum dots, according to Allan Blackman, from AUT, in ep 14 of Elemental.

The story of bromine is one of the color purple, the Dead Sea and an early poison gas used in the First World War, says Allan Blackman from AUT, in ep 13 of Elemental.

Made by cosmic rays and supernovae, used in ovenproof cookware, and a key ingredient in the strongest acid ever made. Allan Blackman from AUT explores boron in ep 12 of Elemental.