Study: More than 6 million could die early from air pollution every year

By Azadeh Ansari, CNN

Updated 2222 GMT (0622 HKT) September 16, 2015

Burning fossil fuels for electricity and heat is, by far, the main driver of climate change. Emissions from those sectors account for nearly a third of global greenhouse gas emissions, according to the <a href="http://www.wri.org/" target="_blank">World Resources Institute</a>. These activities are the biggest climate villains, statistically speaking.
Photos: What's causing climate change? Meet the top 10 villains
Electricity and heat: 30.6% – Burning fossil fuels for electricity and heat is, by far, the main driver of climate change. Emissions from those sectors account for nearly a third of global greenhouse gas emissions, according to the World Resources Institute. These activities are the biggest climate villains, statistically speaking.
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