BBC report on fish farming in Malawi

BBC reported about a successfull fish farming project in Malawi – one of the poorest countries in Africa.  The project combines Tilapia and Catfish farming in rain-fed ponds with raising chicken and goat crop farming (e.g., maize), thus recycling the nutrients very efficiently. A nice example for ecological engineering! Read more at http://news.bbc.co.uk/2/hi/science/nature/7683748.stm