View images of pollution and sources of pollution. Starlight Over Granity. Credit Dave Allen. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cowsin Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Wetland Cows in Wairarapa Waterway. Credit Dave Allen NIWA. Baring Head Clean Air Monitoring Station. Credit Dave Allen NIWA. Baring Head Clean Air Monitoring Station. Credit Dave Allen NIWA. Baring Head Clean Air Monitoring Station. Credit Dave Allen NIWA. Hutt Valley Air Pollution. Credit Dave Allen NIWA. Cows in Kapiti Stream. Credit Dave Allen NIWA. Ngaurunga Gorge Pollution. Credit Dave Allen NIWA. Ngaurunga Gorge Pollution. Credit Dave Allen NIWA. Ngaurunga Gorge Pollution. Credit Dave Allen NIWA. Ngaurunga Gorge Pollution. Credit Dave Allen NIWA. Auckland University student Huimin Lin carrying a “PTrak” particle counter. Credit Ian Longley NIWA. Auckland University student Huimin Lin carrying a “PTrak” particle counter. Credit Ian Longley NIWA. Waiwhetu Stream Pollution. Credit Dave Allen NIWA. Waiwhetu Stream Pollution. Credit Dave Allen NIWA. Waiwhetu Stream Pollution. Credit Dave Allen NIWA. Smoke From Domestic Log Burner in Wellington. Credit Dave Allen NIWA. Smoke From Domestic Log Burner in Wellington. Credit Dave Allen NIWA.