This week’s Science in Action BBC in London presents (subject to change):

• We find out why science, technology, engineering and mathematics (STEM) related research are very important indicators and drivers of a region’s economic and development success. We examine a World Bank and Elsevier report that examines Africa’s research enterprise in STEM over a ten-year period from 2003 to 2012 and reveals how the country still lags significantly behind other emerging economies and relies heavily on international collaboration despite an overall increase in STEM research output across Africa.

• Environment reporter, Navin Singh Khadka, reports from Punjab on why farmers are using banned pesticides on crops for export and how widespread this practice is becoming across the region.

• We look at new research that shows how an increase in greenhouse gases has led to a high pressure weather system that is causing drought in the region of California.