Welcome to the Practical Answers resource library We have over 3000 online resources available, including technical briefs and drawings, and audios and videos, on a range of topics and sub-topics, and in different languages. The resources are all focused on small-scale appropriate technologies aimed at improving access to infrastructure and enterprise development for people living in poverty. Authors range from Practical Action staff in our global offices to technical professionals from other organisations. Select a topic from the list below to narrow down your search, you can then view materials online or download it. You may also want to write a comment on one of the subjects covered here or post a submit a question to our Practical Answers team.

Follow the story

Subscribe to our Practical Answers email newsletter, to stay updated on the latest documents that we have to offer and some tailor made contents to help people tackle some of the world’s toughest challenges.

We’ll also keep you updated on our supporter events, fundraising activities and the many ways you can get involved in our work.


We take protecting your personal information seriously. We will never sell or swap your details with another organisation.  We aim to provide you with a great experience of Practical Action and to communicate with every supporter in the best way possible.  To do this, we may analyse your data and obtain further information about interests, preferences and level of potential donations using publicly available sources. We sometimes ask carefully selected companies to do this for us.

You can find out more about how we collect and use your personal information by reading our privacy notice at To change how we manage your personal information or opt out of receiving communications from Practical Action call us on 0800 389 1624 email