Iran Earthquake

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Iran Earthquake This week we look at the causes of the recent earthquakes in Iran, why is the region so susceptible to earthquakes and what measures can be taken to prevent deaths from quakes in heavily populated areas? Nuclear fallout Long term research into the spread of radiation following the leaks from the Fukushima nuclear power station two years ago shows the radioactivity is largely confined to the areas where it fell. We ask why this radioactivity from the incident now seems to be locked in to the tissues of plants and soils. Stopping fish becoming extinct We examine the plight of global fish stocks. A new analysis suggests overfishing could lead to the extinction of some common food species. (Photo credits: AFP/Getty Images)