Le bleu du ciel (The Blue of the Sky) Two computers linked by telephone showing an average of the 2 colours of the sky North and South of France-Toulon / Tourcoing-School of Fine Arts-January 94

Night and day Two computers between Brasil and Australia average every three minutes the images of the skies in those two countries - Arte no seculo - Sao Paulo - dec.1995

Flower power - an ecological and social action in Lille by Stéphan Barron and Sylvia Hansmann - 1995/1998

Ozone The measures of Ozone produced by the car pollution in the city of Lille, and the measures of ultraviolets that come through the ozone layer are changed into sounds via internet and broadcast live in the street in Roubaix and in the garden of the Old Treasury Building in Adelaide. International Adelaide Festival, March 1996

Eurotunnel Stéphan Barron and Sylvia Hansmann travelling by boat accross the English Channel directly above the trajectory of the Chunnel, throw at regular intervals bouys followed by satellites. The Chunnel's line is spread by the streams - 1998