Reuters: Britain should increase its climate targets to an 80 percent cut in greenhouse gas emissions by 2050, compared to its present 60 percent goal, its chief adviser on climate change said on Tuesday. The higher target should apply across all sectors of the UK economy and would cost between 1 and 2 percent of gross domestic product in 2050, said the Committee on Climate Change (CCC), which advises the government on how it can meet its climate change goals. The new goal would also …