Steel makers have for the first time agreed to set up a system that will collect and report data for greenhouse-gas emissions by the industry on a consistent basis around the world. The International Iron and Steel Institute, based in Brussels, says that it will administer the scheme across the industry, which, it says, accounts for 3?4% of global man-made emissions. However, steel makers have not yet agreed on the extent to which the data for each plant should be made public ? some companies have complained that this would require them to divulge confidential information about production levels.