Business Green: Rich nations’ commitment to help poor countries fight climate change has been called into question once again, after reports show some countries may be rehashing old funding and presenting it as new. Developed nations have already pledged $29.8bn (£19.2bn) of new and additional funding for poorer countries as agreed in the Copenhagen Accord in December last year, according to analysis from Reuters. The calculations mean rich countries have “all but met” the $30bn target of …