Global Update - Environmental Health - A How-to Book for Everything From Water Filters to Fly Traps - NYTimes.com: "The 600-page book is written in simple English and has hundreds of drawings showing, for example, how to disinfect water with boiling, bleach, sunlight or lime juice and how to make filters from sand, clay and charcoal. It has numerous designs for stoves that use less fuel; it has schematic drawings of simple fly and roach traps and bicycle-powered grinders and blenders. It devotes almost 40 pages just to toilets."
No comments:
Post a Comment