Money That Grows on Crops

He can’t quite make money grow from trees, but Christopher Anderson, an environmental geologist from Massey University in Palmerston North, New Zealand, has devised a way to harvest gold from plants. The idea: Use common crops to soak up contaminants in soil from gold-mining sites and return the areas to productive agriculture. The gold harvested from the process pays for the cleanup — with money left over for training in sustainable agriculture