With everybody desiring a share of the "green pie" ,the clean tech market now seems to be overheating.The year 2006 saw 29,874 scientific journal articles , and 4,093 U.S. patents focused on clean tech.In addition with new startups coming all too frequently their total number now stands at nearly 1500 .It hence seems probable that some of these idealistic companies would tumble down. For instance , recently the Seattle based biofuel company Imperium Renewables sought to withdraw its public offering in January 2008 ,followed by biodiseal company Renewable Energy Group, Iowa, withdrawing its IPO in March 2008.However the good news seems to be the fact that there is a great deal of tangible progress being made in the clean tech technology domain.And even if the "cleantech bubble" does burst the ground realities of global warming and rising fuel prices do not change.
