Calcium (Ca)
Elements19 Jul 2014

Calcium (Ca)

Calcium is the great structural element. It is the basis of much of the great architecture in nature as well as many of the incredible structures made by man. Presenter Justin Rowlatt hears from chemistry supremo Andrea Sella at the Royal Institution in London, where calcium was first isolated two centuries ago. He visits the obscure birthplace of the biggest modern-day use of calcium - cement - and sees that use in action at London's giant Crossrail construction project. And, if that weren't enough, we also hear from Professor Serena Best of Cambridge University about how she is trying to replicate the way the human body uses calcium to construct bone.

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Episoder(65)

Tin (Sn)

Tin (Sn)

Tin may seem old-fashioned, but it plays some surprisingly important roles in the modern economy. Presenter Justin Rowlatt meets our favourite chemist Andrea Sella of UCL at Pewters' Hall in London to...

18 Jul 201431min

Carbon (C) - materials

Carbon (C) - materials

We all know carbon's role in global warming, but could element 6 also provide some solutions? Carbon fibre composites are making planes more fuel efficient, as Airbus explains. And wonder-material gra...

17 Jul 201427min

Carbon (C) - energy

Carbon (C) - energy

Carbon is a great energy store – in plants and animals, but also as hydrocarbons – coal, oil and natural gas. From the Industrial Revolution onwards, burning these fossil fuels has released vast quant...

16 Jul 201426min

Gold (Au)

Gold (Au)

Heavy and chemically inert, why is gold, of all the elements of the periodic table, so highly valued by mankind? Does it even provide a sound basis for modern currencies? What is it actually useful fo...

15 Jul 201423min

Mercury (Hg)

Mercury (Hg)

Mercury is beautiful, yet deadly poisonous. Known as quicksilver, the Minamata international treaty aims to phase its use out completely. But how will the ban on element 80 affect artisanal gold miner...

14 Jul 201423min

Aluminium (Al)

Aluminium (Al)

Light, strong and flexible, aluminium is used in drinks cans, window frames, aircraft and packaging. Ubiqitous today, why was it valued more highly than gold 150 years ago? Is it better to recycle thi...

13 Jul 201427min

Helium (He)

Helium (He)

The second most abundant element in the universe, helium is rare on Earth. In liquid form it is used as a coolant in super conducting magnets in MRI scanners – so should this rare element be used in s...

12 Jul 201423min

Phosphorus (P)

Phosphorus (P)

Phosphorus is essential for life. Our crops would not grow without phosphate fertiliser. So should we worry that we may be frittering the stuff away? Or that most of the world's remaining reserves are...

11 Jul 201420min

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