London-based WPP accused of breaching climate policy after report reveals firm linked to twice as much oil advertising as US rivals

London-based WPP accused of breaching climate policy after report reveals firm linked to twice as much oil advertising as US rivals

British advertising conglomerate WPP has helped oil companies ExxonMobil, Chevron, Shell, and BP spend an estimated $1 billion on ads in the United States since the 2015 Paris…