Outcomes:

> State the difference between contamination and irradiation

> State what ionising radiation is

> Describe the effects of ionising radiation on living cells

> Explain what categories of people are regularly exposed to the risk of radiation and how their exposure is carefully monitored

> Explain how ionising radiation can be used

Alexander Litvinenko in the intensive care unit of University College Hospital, London, on November 20, 2006. He died three days later. Photograph: Natasja Weitsz/Getty Images Contributor

Alexander Litvinenko: the man who solved his own murder

Full story: https://www.theguardian.com/world/2016/jan/19/alexander-litvinenko-the-man-who-solved-his-own-murder