 A nuclear research reactor is a device that generates neutrons. These tiny particles are used to check the composition of materials and to produce radioactive substances for medical and scientific uses. Research reactors are smaller than power reactors, operated at lower temperatures and need far less fuel. They are usually found in universities and research centres, including countries where no nuclear power reactors are operated. With the support of the IAEA, Jamaica operates the Caribbean's only nuclear research reactor, which scientists use to support agriculture and trade, for example, by helping verify the authenticity of coffee. Coffee samples are put into the reactor to be irradiated, which quickly reveals their exact composition and origin. We can use nuclear analytical techniques to differentiate Jamaica and coffee from coffee's pronouns. Blue Mountain Coffee is one of the most expensive coffees in the world, so it's very important for us to be able to protect that brand. This method is also helping experts to check the components in the soil. We can see concentrations from things like calcium to cadmium to iron, so if you're a farmer this might be particularly useful because you know the soil in itself helps sometimes to contribute to what's grown in your plant. More than 55 countries worldwide are using nuclear research reactors to help improve the lives of millions of people.