Aurora Northern Lights as seen from Space - Timelapse

A video of Northern Lights as seen from earth's orbit, captured by Astronaut Don Pettit.

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5.14 Desalination

In many parts of the world, surface water or non-saline groundwater stocks are not adequate to satisfy the water demand. While one may immediately think of the Middle East as being one such area, it is less obvious that many islands (e.g. the Canary Isles, Madeira, the Channel Islands) also suffer the same problem. In such circumstances, people have been forced to consider the sea and brackish underground aquifers as water sources. To make these saline waters potable, the salt has first to be
Author(s): The Open University

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Copyright © 2016 The Open University

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Where does insight come from?

Authors: 
Alex d'Angelo