Could nuclear terrorism start World War Three? British border guards discovered radioactive uranium in a shipment of scrap metal. Some worry that it was intended to power a devastating device.
‘Dirty bomb’ threat foiled at UK border
Danger: Experts disagree on whether nuclear weapons are saving us from or pushing us further towards war. Glossary
Uranium - A very heavy, silvery-grey metal that is naturally radioactive.
Radiation - Energy given off when radioactive material decays. It can be extremely harmful and sometimes fatal, causing vomiting, skin damage, hair loss and cancer.
Cold War - A period of diplomatic conflict between blocs led by the USA and the USSR that lasted from 1947 until 1991, when the USSR collapsed.
Chernobyl - The disaster, in 1986, involved a meltdown at a nuclear plant in Ukraine.
Radioactive - Something that has or produces radiation.