Food irradiation is a process where food is exposed to a small amount of radiation to kill bacteria and pests. This helps make the food safer to eat and can extend its shelf life. Full definition
They have helped to make the public less hostile to subjects ranging from food irradiation to the burial of nuclear waste — without making them any less aware that things could go wrong. (newscientist.com)
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And he finds food irradiation is «especially frightening because it is so difficult to control». (newscientist.com)