Holy Smokes! World’s worst polluters list is out!

The three private sector firms among India's 20 biggest CO2 emitters include - RPG group's CESC Ltd, Aditya Birla group's Hindalco Industries and Anil Ambani group's Reliance Energy at 16th, 18th and 20th positions respectively.

Suzlon Energy, Adani Group, Larsen and Toubro, Torrent Power, Ultratech Cement Ltd, Uttar Pradesh Jal Vidyut Nigam and Tehri Hydro Development Corp are some of the firms in power generating business in India with zero CO2 emissions.

According to CARMA's massive database, which contains information on the carbon emissions of over 50,000 power plants and 4,000 power companies worldwide, Australia is the world's worst polluter per capita, producing five times as much carbon from generating power as China.

In terms of total carbon emission in a country, the US was named as the most polluting nation with 2.8 billion tons of emissions, followed by China (2.7 billion) and Russia (661 million) at No.2 and No.3 respectively. India is at No.4 with 583 million tons, while Japan occupied the fifth rank with 400 million tons.

Germany (356 million), Australia (226 million), South Africa (222 million), the UK (212 million) and South Korea (185 million) complete the top ten polluting nations list.

The world's worst pollution power plant is the coal-fired power plant operated by Taiwan Power Co in the Lung-Ching township near Taichung in Taiwan which pumps out 41.3 million tons of CO2 per year. Overall, Taiwan is ranked No.13 in the world's most polluting nations list.