Twenty-five of the world's biggest flyers are yet to set targets to reduce corporate flights, despite being responsible for over a third of the travel emissions recorded in the latest edition of the Travel Smart Ranking. Top flyers not making credible plans to reduce corporate flying / Twenty five companies have been singled out in the latest edition of the Travel Smart Ranking, which assesses the efforts and commitments made by multinationals to reduce business travel by air. They are considered poor performers on the basis of two criteria: 1) high CO2 emissions due to employee air travel; 2) no credible targets to reduce these emissions, despite often promoting their green credentials. These 25 multinationals are responsible for 36% of business travel emissions recorded in the ranking. (....)