What's new: Mon 8/4/13
New epub version available - works in Bookle on an iPad
What's new: Tue 26/2/13
This website is now hosted by mythic beasts.
Sequels, further appendices, and open source extensions
of the book
Here are pointers to documents that address the fundamental limits
to energy sources.
Site last modified Wed Apr 17 11:02:50 BST 2013