It is with great sadness that I let George's followers know that he suddenly, unexpectedly, and peacefully passed away at his home in Se...

                        Nicolas Cretton is a teacher in Lugano Switzerland, near Milan. He sent the following links to work done by his stud...

Most read this past year: fixing led string lights   3520 views diy solar parabolic trough gen2 intro 1500 views superinsulating my refrige...

Remarks on some of the inexpensive CO2 meters I am testing. Showing CO2 readings from 5 meters in my office. My own breath over a few hours ...

Ongoing series since 2014 about managing my home energy. Click any picture to enlarge. Use BACK to get to this new index. A work in p...