g,
There’s plenty of room to work on vaccines and drugs for tropical diseases, improved strains of African crops like cassava, drip irrigation devices, charcoal technology, etc.
http://en.wikipedia.org/wiki/Amy_Smith http://web.mit.edu/newsoffice/2008/lemelson-sustainability-0423.html
g,
There’s plenty of room to work on vaccines and drugs for tropical diseases, improved strains of African crops like cassava, drip irrigation devices, charcoal technology, etc.
http://en.wikipedia.org/wiki/Amy_Smith http://web.mit.edu/newsoffice/2008/lemelson-sustainability-0423.html