Since May two world champion windsurfers, Diogo Guerreiro and Flávio Jardim, have been making their way up the coast of Brazil. The aim of 4000 mile trip, a world record, is to make children aware of the environment and issues related to sustainable development. Currently they are in Rio and the pair spoke with the BBC before venturing further north,

The two hold regular webcasts via Destino Azul (Blue Destination) Adventure Education and the Federal University of Santa Catarina is also helping them document and speak about sustainable development and Agenda 21.