CBC: A University of Manitoba climate researcher says the growth of Arctic sea ice in 2008 is not cause for optimism. What scientists are seeing is mostly thin, first-year ice that is likely to melt during the summer, David Barber is quoted as saying this week in the Winnipeg Free Press. The amount of thicker multi-year ice that once covered the entire Arctic basin before it began melting decreased last year, Barber said. Satellite images have recorded that sort of decrease …