"Unfortunately this country has a culture of opposing every type of waste disposal centre, wherever it is, " he added.

BBC: NEWS | UK | Wales | Welsh councils' incinerator trend

Gareth Griffiths and Jason Yorke from Lancaster are typical of the type of visitor to the centre.

BBC: Uphill battles to build peak cafe

The number and type of teachers who are involved in running each centre change depending on its size and capacity.

UNESCO: Country Profile: Uruguay

ICTP's Science Dissemination Unit (SDU) has the broad aim of disseminating scientific contents to more people than are able to visit the Centre, and to the public in general throughout the world, via any digital media type.

UNESCO: Main Menu