现代人大部分住在都市里,很多人一辈子没摸过泥土、涉过小溪。他们的脚与泥土隔着各式建材,还教育小孩远离泥土,认为土壤是肮脏带菌的。但我们是依赖泥土存活的,动物(包括人类)需要依赖植物才能生存,而植物的生长需要阳光、空气、水和土壤。土壤决定生长植物的品质,土壤中养分充足,我们也会获得丰富的营养；土壤污染了,生长的植物遭污染,食用植物的我们也会遭殃。 Most of the modern people live in the city, many people never touched the soil, involved in a stream. Their feet and the earth, across all kinds of building materials, but also educate children away from the soil, that the soil is dirty with bacteria. But we rely on the earth to survive. Animals, including humans, need to rely on plants to survive, while the plants need sunlight, air, water and soil to grow. The soil determines the quality of the plants that grow, the soil has enough nutrients, and we also get rich nutrition; the soil is contaminated, the plants growing are contaminated, and we also suffer from consuming plants.