Agence France-Presse: US experts warn that rules governing biofuel production encourage deforestation and mean the technology is therefore a “false” method of reducing greenhouse gas emissions. In a study to be published Friday in the US journal Science, a group of 13 scientists called for the rules, which contain a loophole exempting carbon dioxide emitted by bioenergy regardless of its source, to be overturned. “The error is serious, but readily fixable,” said lead researcher Timothy Searchinger …