"[This nature walk] is a symbol of who we are and what we have made here on earth, like it or not — an unusually honest space in which to contemplate the nature of our city and our civilization. As much as we have created the grand cultural playgrounds of Manhattan, we have also created the wretchedness of Newtown Creek. The two worlds need each other and cannot be set apart, though much of our economic system takes great pains to encourage the illusion that this is not the case."
Read more here. (Note that the article is a bit exaggerated in its description of the nature walk's terrible bleakness. For example, there is actually a fair amount of vegetation in two separate garden areas.)