We'd like to modernise our digital outreach in ways that suit your needs.
Please support us and do take part in this anonymous online survey regarding our users’ preferences.


At D+C/E+Z, we are proud of our international network of authors. It is particularly important to us to be a platform for voices from the global south. Some authors contribute on a regular basis, others don't. Here you can find information about the people behind the contributions.

Muhammad Khalifa

All articles of Muhammad Khalifa


Simple, but effective

The tradition of puryfing drinking water with clay filters deserves to be revitalised in the Arab World

Our Contributors