Tom: I very much enjoy your lucid presentation of the energy flow principles and their application in nature. I hope the greenerdesign web-site re-institutes a bio-mimicry tool listing so that this important subject can easily be accessed. Bill Broder

Per the comment above, I'd just like to point out that there is a biomimicry section still on the website, it's just not at the top level of the site -- you can find it by clicking on "Design & Innovation" above and looking at the related tags, by clicking on the Biomimicry tag itself at the top of this story, or going here:
http://greenerdesign.com/browse/design-innovation.