The weather may not always have been kind to cocoa farmers in West Africa, but until recently it was at least broadly predictable.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/increasingly-erratic-climate-menaces-africas-cocoa-date-29-nov-11-country-ivory-coast-author
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/planet-ark-australia
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cocoa
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-impacts
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ghana
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oecd
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[11] http://admin.indiaenvironmentportal.org.in/thesaurus/cop-17
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ipcc