Emissions - Rail Transportation

The United States of America is the top country by emissions in the world. As of 2008, emissions in the United States of America was 30.96 mt that accounts for 42.85% of the world's emissions. The top 5 countries (others are India, Canada, Russian Federation, and Spain) account for 72.47% of it. The world's total emissions was estimated at 72.25 mt in 2008.