Peter Ellis wrote:Two through five I agree, they work. Glass and ceramic knapping is tricky, but IMO easier than flint. But the use of sunlight to make potable water just by exposure? That I don't buy. The UV light sterilizing systems use a much higher intensity of exposure than sunlight provides. Plus there are the problems of toxins, not just biologicals, in questionable water. Some of the chemicals are created by uv exposure.
I am amused by snack food fire starters though.😃