Marketplace: Doug Krizner: The European Union has charged a number of major airlines with fixing the price of jet fuel for cargo planes. British Airways and Japan Airlines have been cited. More carriers are being investigated. The E.U. has also been working to get airlines to reduce carbon emissions. A new law requiring lower emissions has been bumped back a year. As Megan Williams reports, it’s a watered-down version of an earlier bill, but it’s still enough to make non-European carriers …