ClimateWire: Scientists are gloomy; economists are more upbeat. Such was the bottom line of an epic, three-day international congress of climate change experts that ended here yesterday. At the congress, it seemed that all the scientists had to share with their peers was bad news, but a number of economists saw the climate crisis rather as an historic opportunity to reorganize the world economy and develop new, clean and job-creating activities. At the opening of yesterday’s session, Lord …