Practical Answers

The Technical Information Service of Practical Action

Practical Action has been using appropriate technology to help people in the developing world for more than four decades. Within Practical Answers section of this site you will find a knowledge bank of these technologies so that you can take them and replicate them. If you can’t find what you are looking for you can ask a question through our technical enquiries service. More information

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Featured Articles


Micro Hydro Pre-feasibility Study: A Technical Guideline

  • video
  • English

This video is a technical guideline on how to conducted pre-feasibility studies for micro-hydro projects. The...

Published by Practical Action Sudan on 04/03/14


Watermelon Jam

  • video
  • Arabic

A small-scale approach to making watermelon jam as part of the training from Practical Action Sudan.

Published by Practical Action Sudan on 04/03/14


Zeer pot clay fridge - preserving food in Sudan

  • video
  • English

An introduction to the approach taken in Sudan to make evaporative coolers for food preservation.

Published by Practical Action Sudan on 04/03/14


Harnessing the power of mobile

The Practical Answers call centre in Bangladesh is now live – giving us a great opportunity to in...
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