The Tory leader was hosted by a firm that holds a major contract with one of the world’s biggest polluters.

Hill & Knowlton played a key role in exporting Big Oil's PR tactics to the Southern Hemisphere.

New research reveals how Dentsu, Havas, Interpublic Group, Omnicom, Publicis Groupe, and WPP cast themselves as climate champions.

The groups have filed an OECD complaint against the world’s largest advertising and PR firm, saying its work enables major polluters to continue harming environmental and human health.

A look back at the year’s manipulative messaging.

Bank has been bigging up reductions in “operational emissions” while continuing to finance the fossil fuel industry.

Fossil-friendly communications companies are represented on some national delegations to the climate talks, DeSmog analysis finds.

Fossil fuel companies are spending millions on campaigns to deflect attention from the need to stop drilling for more oil and gas.

Disclosure by the French communications group underscores growing calls for climate accountability in the advertising and public relations industry.

New documents show how a deceptive PR strategy pioneered in 1950s California first exposed the risk of climate change and then helped the industry deny it.