In recent years, urban horticulture has become an increasingly important part of the world's food supply. It has been shown that some vegetables grown near to major highways have a heavy metal content between 2 and 10 times higher than those sold in supermarkets. Recent research suggests that these abnormally high levels of metal pollutants may be associated with increased health risks. Here, we refute this hypothesis and demonstrate the beneficial health effects of over-consumption of plants from urban crops near major highways. We note on several subjects the development of new physical capacities, such as the possibility to generate light, to walk on water, to levitate and to resist extreme cold. This major discovery leads us to completely rethink horticulture and its impact on human development.