A couple of months ago, in response to a story that Changing World Technologies was going to file an IPO to help commercialize their TPD technology, I reposted my story:TDP: The Next Big ThingTurns out they decided against the IPO. Bankruptcy seemed the better option:...

I tend to get a lot of e-mails from people either claiming to have invented the next big thing in alternative energy, or from people who want to know if a particular company has something that seems worthwhile. Generally, I can sniff out the scams and pseudoscientists pretty quickly. There ...

While the most recent two posts (here and here) on Changing World Technologies' thermal depolymerization (TDP) process were reposts, this one has not been previously posted here. Regular reader "Optimist" was initially optimistic about the TDP technology. During his investigation, he went through the chemistry of the process, ...

The is Part II of my look at Changing World Technologies' thermal depolymerization process. This essay came from a reader, and was originally posted on April 12, 2007.But I also want to add some comments that regular reader "Optimist" added following the previous essay. First, those comments:...

Because of the upcoming IPO for Changing World Technologies (See this story at Seeking Alpha) the articles that I wrote on the company are getting quite a bit of traffic. I thought I would bump them to the top for a review of who they are, what they do, ...

I am still working on an essay on butanol, pentanol, and higher-chain alcohols, but it has been really difficult to find the information I am looking for. (But I have figured out why bio-butanol has not taken off). Regardless, I hope to complete it in a few days.In ...

If you are a layperson, it may not be clear to you just how much of the current infatuation with cellulosic ethanol is hype, and how much is based on realistic assessments. So, I thought I would take you down memory lane and revisit another technology that was going to ...