There is now an emerging literature on citizen science, sustainability science, appreciative enquiry and so on (Sayer and Campbell, 2004) that shows how modern knowledge and innovation systems can engage with traditional knowledge and link it to modern innovation systems (Asenso-Okyere et al., In general poor people are more vulnerable than the more wealthy. Irregularity and great variation in the climate created uncertainties and this made it difficult for farmers to plan which crops to plant, when they could harvest and how much production they could get every year.