Reuters: Worldwide investment in clean technology suffered a steep decline in the first quarter of 2009 as the difficulty of pushing through initial public offerings (IPOs) of start-ups across many sectors hit record lows, three surveys showed on Wednesday. Although the surveys used different methodologies, their messages were the same — investment is down in clean tech and other areas and it won’t rebound in the near-term. Deloitte and Cleantech Group reported that investment in clean …