Outside of cities, people are not exposed to the same level of diversity-in both thought and personal characteristics-as they are within them. Mingling of diverse people is vital to fostering tolerance and acceptance in broader society. It is also well established that people living in a modern city have a significantly smaller impact on the environment. A thousand people can share the same small park, rather than each have a lawn.
“Nature” implies a distinction between natural and man-made, artificial elements of the Earth. Although humans currently comprise only a minuscule proportion of the total living biomass on Earth, the human effect on nature is disproportionately large. Because of the extent of human influence, the boundaries between what humans regard as nature and “made environments” is not clear cut except at the extremes.
