Radium, polonium and radon sound frightening, but are they actually useful for anything?
Radioactives (Po, Ra, Rn)
It's stronger than steel, but could this glamorous metal become as common as steel?
Nanotech, virtual reality, and the stuff that could oust the silicon from Silicon Valley.
Magnesium and Beryllium
Two metals with sinister reputations - one for flammability, the other for lung disease
Noble Gases (Ar, Ne, Kr, Xe)
Neon, argon, krypton & xenon: From blinding arc lights to the dying trade of sign-making.
Why copper wires? And do solar power and batteries herald the death of the old AC grid?
Hydrogen (H) - water (part 1)
Northwest India is fast running out of groundwater. Is migration and conflict inevitable?
Hydrogen (H) - water (part 2)
As climate change plays havoc with the rain, could we draw water directly from the ocean?
The self-sacrificing metal that brings shelter and good health to India's poorest.
Hydrogen (H) - energy
Is the dream of a hydrogen-fuelled zero-carbon economy achievable?
India is completely dependent on imports of potash, a fertiliser essential for crops.
This toxic metal is being phased out of our lives, but still keeps planes up in the air.
Hydrogen (H) - fusion
Could we finally be about to crack this source of potentially unlimited clean energy?
Why does iodine deficiency still blight children in developing countries like India?
The shiniest and showiest of metals has some surprisingly modern applications.
The poison in everything from paint and sweets, to telegraph polls and drinking water.
Platinum group (Pt, Pd, Ru, Rh, Os, Ir)
Six rare metals that clean the air but are the focus of violent conflict in South Africa.
This metal offers thousands of years of nuclear energy, but is it any safer than uranium?
Why do we value this useless metal? And does it bring out the worst in human nature?
In the final programme in the series we look at the rarest members of the periodic table.
The Royal Welsh Agricultural Show
We're live at the Showground in Llanelwedd.
Dr Monty Lyman reveals the strange complexity of our largest organ.
BBC Wiltshire celebrates the county's great outdoors.
BBC Yorkshire's favourite weatherman hosts a special about the weather in our county.
The moon landing and another big space anniversary
The comet Shoemaker – Levy 9 spectacularly crashed into Jupiter 25 years ago