Venture capitalist Vinod Khosla on Tuesday issued a harsh rebuke to 60 Minutes a week after the news magazine TV show broadcast a report saying that Silicon Valley and Washington have little to show for their investments in clean technology. In an open letter to both 60 Minutes and its network, CBS, Khosla said a January 5 segment for which he was interviewed grossly misrepresented the state of the sustainable energy industry. The letter, which was posted on the website of Khoslas Menlo Park, California firm, Khosla Ventures, went on to list what he called numerous reporting errors in 60 Minutes. A spokesman for 60 Minutes responded saying, While we respect Mr Khoslas views, we are not in agreement with the points he makes about our story. We began and ended the piece with him, and devoted time to his ideas and to one of the companies he backs. The news magazines segment on investments in advanced energy, sometimes known as cleantech, characterized Khosla-funded biofuels maker Kior Inc as riddled with delays. It quoted a biofuels specialist, Robert Rapier, as saying Khosla overpromised and under-delivered on his investments.