Organic gardener Ken Bourne of Forest Grove is on fire about a substance he cooks up in his backyard called biochar.
It's basically charcoal made from wood and other organic debris, which when added to garden soil, boosts the nutritional value for plants and makes things grow like crazy.
People of the Amazon have been producing and using this soil-enhancing material for thousands of years, creating it by smouldering agricultural waste in pits or trenches.
Bourne
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