I am a permaculturist and I'm working on using permaculture in urban environments. There are many potential uses of permaculture as a sustainable source of food that equally enhances biodiversity and renders urban environments more resilient. Permaculture is a science in the sense that it is empirical and it is social in the sense that its three ethics are: Earth Care, People Care and Fair Shares. Permaculture has been used to reconstitute degraded land and combat desertification in Third-World countries as well as phyto-remediation of polluted land in cities and also in producing an adequate food supply in the face of sudden peak oil (Cuba in the early 1990s). Resilient communities must have both food security and food sovereignty and this means that food production must be put into the hands of small-scale, organic and local food producers rather than the big agri-businesses and the biotech industry. So, permaculture as rural agriculture, i.e. creating agriculture as ecosystems maintaining biodiversity, and urban permaculture projects, rooftop and balcony gardening, community gardening, urban beekeeping are crucial not only to supplying cities with food but equally to reconnecting their denizens with nature. At present I'm working on projects in Brussels.