Rare Earth Elements (Ce, Nd, Dy, Er, etc)
Elements21 Juli 2014

Rare Earth Elements (Ce, Nd, Dy, Er, etc)

Neither rare nor earths, these 17 elements are nonetheless difficult and unpleasant to mine and refine. Chemically near-identical, these metals have unique magnetic and optical properties, making them essential in modern technology from fibre optics to wind turbines. So should we worry about China's stranglehold over their supply?

(Picture: 20 euro note glows under an ultraviolet light; Credit: Frans Dekkers/Thinkstock)

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Avsnitt(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 Juli 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 Juli 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 Juli 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 Juli 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 Juli 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 Juli 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 Juli 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 Juli 201420min

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