Potassium permanganate (KMnO4) used to be bought at a chemist’s shop as purple crystals. Way back, when Adam was a boy, it was included in snake bite kits
Monthly Archives: February 2009
Whole House fans have been around for over 40 years and offer a way to make a dramatic
Whole House Fans
It appears that the Australian Government is about to offer free ceiling insulation to thousands of homes. That fine when you want to keep the cool in with air conditioning or the warmth in with heating. However,
Another insulation myth
The “natural” insulation industry has done lot to frighten people about mineral and glass insulation