Elements
Today: #175 in Science, United Kingdom on our combined chart.
Today: #92 in Science, Ireland on our combined chart.
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Latest episodes
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Obscure Elements
September 28, 2016 · 30 minIn the final programme in our Elements series, Justin Rowlatt looks at the rarest and oddest members of the periodic table. Selenium, bismuth, molybdenum, antimony, rhenium, hafnium, zirconium, tellurium, thallium, barium. What are they?…
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Gold (Au)
September 21, 2016 · 30 minWhy do we value this practically useless metal so highly? And does it bring out the worst in human nature? In a second look at this most coveted of metals, Justin Rowlatt hears both sides of the age-old argument. Swiss investor and gold…
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Thorium (Th)
September 16, 2016 · 30 minThis radioactive metal holds the promise of thousands of years of energy for the world. But is it really any cleaner or safer than traditional uranium-based nuclear power? Chemistry Professor Andrea Sella of University College London takes…
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Platinum group (Pt, Pd, Ru, Rh, Os, Ir)
September 7, 2016 · 30 minSix extremely rare metals that clean your car exhaust and turbocharge industrial chemistry, but which are also the focus of a violent power struggle in South Africa. Presenter Laurence Knight heads to Johnson Matthey, a company that…
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Arsenic (As)
August 31, 2016 · 30 minThe macabre poison we know from crime novels and history books has some surprising modern uses. Justin Rowlatt travels the Subcontinent - first to India's Forest Research Institute in the Himalayas where Sadhna Tripathi explains why the…
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Silver (Ag)
August 24, 2016 · 30 minThe shiniest and showiest of metals is still mainly used in silverware. But it also has some surprisingly modern applications. Justin Rowlatt heads deep under the city streets to the sparkling London Silver Vaults to talk tableware and…
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Iodine (I)
August 17, 2016 · 30 minWhy does iodine deficiency still blight children in developing countries like India? Justin Rowlatt travels to Dehradun in the Himalayas with world expert Chandrakant Pandav to diagnose schoolchildren still suffering from the throat…
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Hydrogen (H) - fusion
May 31, 2016 · 30 minCould we finally be about to crack this source of potentially unlimited clean energy - thanks in part to a plethora of private sector tech startups? Laurence Knight travels to one such company, Tokamak Energy in the UK, to hear from…
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Cadmium (Cd)
May 25, 2016 · 30 minThis toxic metal is slowly being phased out of our lives. But as presenter Justin Rowlatt discovers, while nickel-cadmium batteries may have disappeared from our gadgets, they still help to keep planes up in the air. Chemistry professor…
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Potassium (K)
May 18, 2016 · 30 minPotash plumps up fruit, vegetables and grains, and the potassium it contains is an essential nutrient. Yet India is completely dependent on imports of this critical fertiliser to feed its population. Presenter Justin Rowlatt visits a farm…
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Hydrogen (H) - energy
May 10, 2016 · 30 minIs the dream of a hydrogen-fuelled zero-carbon economy achievable? Presenters Justin Rowlatt and Laurence Knight ask where the hydrogen will come from and how we will store it. Professor Andrea Sella of University College London blows up a…
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Zinc (Zn)
May 4, 2016 · 30 minThe metal that brings shelter and good health to India's poorest. Presenter Laurence Knight travels to a bustling Delhi where Rahul Sharma of the International Zinc Association explains how this self-sacrificing chemical element fights off…