By Richard Lockhart in Edinburgh The UN has identified greenwashing by business and finance as the biggest danger facing the race to net zero, urging them to avoid a toxic cover-up and to ensure that any climate pledges they keep are in line with the 1.5-degree targets. The report warned that greenwashing, weak regulation and intensive lobbying by fossil fuel proponents was the greatest impediment to fighting climate change. The business sector cannot be trusted to police itself, the report said, and must be subject to strict national and international laws and regulations on green investment….