General Electric has brushed aside the doubts leading Republican presidential contenders have raised about climate science. The US industrial and financial conglomerate said it had long seen climate change as a valid concern after an internal evaluation of the scientific case in 2005. (Snip) Observers have attributed the party’s shift since the last election to a range of factors, including the rise of the anti-regulatory Tea Party and fears about unemployment. Others suggest the change is due to fossil fuel interests using so-called super PACs – the new generation of political action committees empowered by a 2010 Supreme Court ruling...