You can live without electricity, but not water or food. A crop of new companies are trying to take the chemistry out of agriculture and eliminate crop pests and microbes the natural way.
Mix silver particles in household paint and you can disinfect the place.
A couple of start-ups say medicinal foods can help world health and be a lifestyle accessory.
Australian company Ioteq says the iodine in its Isan system will kill bacteria better than chlorine or ozone will--and it won't cost more.
CNET News.com's Michael Kanellos explores a rapidly expanding sector in the world of green tech. It's biopesticides, which refers to the use of helpful microorganisms to fight those that damage farm or garden products. Kanellos spoke with the president of AgraQuest, one of a rising number of companies promoting biopesticides.
blog Marrone Organic Innovations is tinkering with a way to use components of an herbal medicine as an organic weed killer.
blog Company that uses ozone to purify water and keep food fresh gets more funding.