International Herald Tribune: The largest British companies, including BP, Tesco and BT Group, pledged to offer greener products and invest in research and technology as part of a wider push to reduce carbon emissions and serve as models for other countries. In a concerted effort, 18 of the top British top companies – ranging from carmakers and airlines to retailers and banks – were to publish a report Monday in which they promised to develop new products and services that would allow customers to cut their carbon …