Diesel: no answer to global warming

Whenever the issue of urban smog due to diesel exhaust emissions is raised, auto companies vie that diesel is the answer to reducing emissions of carbon dioxide (CO 2 ), the main greenhouse gas. But the last bastion of the powerful diesel lobby collapsed with a new study saying that though it takes less diesel to run a vehicle per km, it still does not help save fuel and control carbon emissions. The study is from France, where almost every fourth car is diesel-fuelled. It explodes the myth that diesel