NORWICH.- In May unmanned aircraft will enter the lower airspace of the city of Norwich and will be targeting the consciences of the people beneath them. The installation is by internationally acclaimed artists Helen Evans and Heiko Hansen (collectively known as HeHe) whose urban installations are renowned for playing with scale. The artists hope the miniature Airbus 380’s (1:200 scale), which will be seen by thousands of pedestrians using the city, will challenge the everyday perception of low cost air travel and highlight its effect on global warming. The work entitled ‘Plane Jam’ will be sited in the centre of Norwich. The planes will release remote controlled emissions at various times throughout the day. These emissions will be highly visible thereby drawing attention to the high-cost of low-cost air travel that is damaging our fragile atmosphere, the envelope of gases surrounding the earth. We never actually see the harmful toxins