People really want to do good positive work that benefits everybody - it is a legitimate desire to earn & do even more good - today there are plenty of good opportunities to invest - that said people just do not want to take any risk at all - to such people the only advise to give them is "taking no risk is the worst as one never really gets out of the muck - the situation always remains the same & more often than not deteriororates even further - becomes worse & everytime time the most valuable commodity is lost,resources - physical goods, good thoughts & ideas are lost, opportunities to provide services,software & streamline deliveries of critical results - everything in a nutshell is lost. What is worse is even lives and useful results get wasted - what is the use of acting after an event - the only way forward is to then act so that the mistakes are not repeated ever again. Today lots of water,energy,time & resources can be saved &/or used better for spectacular results.

There are opportunities in many countries http://opportunity.org

Solar water pumps exist today,hybrid solutions for energy (solar+wind+small hydro) for agriculture, vertical farming is also doing the rounds,many innovative people are growing vegetables in rooftop gardens in cities, ICAR,FAO,IRRI, are 3 wonderful organizations doing amazing work in agriculture - that said some of the work must done with help of private companies.

A link for Commercialization of agricultural tech from India.

http://www.icar.org.in/en/node/372

Many opportunities exist today. All of us must go get these opportunities and take risks - doing nothing just wastes time!