Imagine a skyscraper that -- instead of hosting offices -- houses a system that purifies the water of a polluted river, employs the people living in surrounding slums and gives them a home in which to live. http://feeds.feedburner.com/~ff/rss/...?d=yIl2AUoC8zA http://feeds.feedburner.com/~ff/rss/...?d=7Q72WNTAKBA http://feeds.feedburner.com/~ff/rss/...Hw:V_sGLiPBpWU http://feeds.feedburner.com/~ff/rss/...?d=qj6IDK7rITs http://feeds.feedburner.com/~ff/rss/...Hw:gIN9vFwOqvQ
http://feeds.feedburner.com/~r/rss/c...~4/VBmbQ-JjOJc
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