At $70 per ton of carbon dioxide, a carbon tax would be the most efficient means of cutting greenhouse gas emissions, according to an International Monetary Fund report published Friday. But for the moment, carbon taxes remain unpopular, particularly in France, where plans to increase it to 55 euros (or $61.60) from 44.60 euros recently...Read More

Motorised traffic will be banned during Open Streets event on first Sunday of each month  Victoria Street, Edinburgh during the first Open Streets event. Photograph: City of Edinburgh Council   Roads in the centre of Edinburgh were closed to traffic for the first time on Sunday as the city joined the Open Streets movement to reduce...Read More