What is the main topic of the report? [originaltext]Coming up at noon is our spe

Coming up at noon is our special report on polluted air spreading through the city. But first, local residents are protesting against the expansion of roads in Leigh National Park. Forestry officials think this will help bring more visitors, but concerned citizens say the construction and the increased traffic will prove harmful to the environment and affect animals badly. The citizens are currently taking part in a rally in front of the Forestry Department building.