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


Arsenic Removal

  • fact sheet
  • English

This brief outlines the different arsenic removal methods and technologies that are available for use with...

Sarah Matthews , Published by Practical Action on 05/22/14


Bicycle Trailer Hitch

  • fact sheet
  • English

This is a simple design for a bicycle trailer hitch that can be made in a local workshop from a small quantity of...

Dr David Poston , Published by Practical Action on 07/01/14


Micro Grids

  • fact sheet
  • English

The use of micro-grids has a long history, micro-grids were used to provide electricity to small towns right from...

Teo Sanchez, Published by Practical Action on 06/11/14


Time and Distance will not matter now….

In a diverse and vast nation like India, 68.7%of the population inhabits rural areas (Source Worl...
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