real or perceived: the environmental health risks of urban sack gardening in kibera slums of nairobi, kenya. | cities around the world are undergoing rapid urbanization, resulting in the growth of informal settlements or slums. these informal settlements lack basic services, including sanitation, and are associated with joblessness, low-income levels, and insecurity. families living in such settlements may turn to a variety of strategies to improve their livelihoods and household food security, including urban agriculture. however, given the lack of formal sanitation services in most of these informal se ... | 2013 | 23512752 |