Just 90 companies are to blame for most climate change, this 'carbon accountant' says
Richard Heede has become a thorn in the side of the fossil fuel industry

Heede’s research shows that nearly two-thirds of anthropogenic carbon emissions originated in just 90 companies and government-run industries. Among them, the top eight companies – ranked according to annual and cumulative emissions below – account for 20 percent of world carbon emissions from fossil fuels and cement production since the Industrial Revolution.