Vehicle emissions, namely carbon dioxide, is a major contributor to global warming. Emissions also harm plants, soil, and water, which affect the ecological balance of our planet.
Climate change
Greenhouse gases from motor vehicle emissions are a growing concern. The Global Environment Facility estimates that the transport sector now contributes about 15% of all carbon emissions. According to forecasts in carbon emissions in the next ten years, transport might be responsible for as much as 50% of the predicted increase.
Ozone damage
While ozone in the stratosphere protects us from harmful UV raditation, tropospheric ozone is known to damage plants and crops. According to the US EPA, ozone accounts for about 1 to 2 billion dollars worth of agricultural losses each year.
Acid rain
Sulfur dioxide and nitrogen oxides are responsible for acid deposition, commonly known as "acid rain," which can destroy forests and aquatic life.
Eutrophication
NOx emissions can cause excess algae growth in aquatic ecosystems. This depletes the oxygen levels in the water, reducing populations of fish and other animal life.
Regional haze
Airborne particles obscure visibility.
Asian brown cloud
A layer of brown haze 3 kilometers above South Asia and the Indian Ocean. A UNEP study found that this haze is 75% man-made. It is known to disrupt the region's hydrological cycle.