Photo WaterAid/Brent Stirton
People can harvest fog. With the help of simple but innovative technology, tiny water droplets are trapped as the mountain fog passes through a plastic mesh, which is stretched between two poles. The water trickles down and is collected in a trough below and stored in tanks, providing enough clean and safe water for a whole village.
The advantages are:
· It doesn't cost a great deal to set up, operate or maintain.
· It is constructed in modules, so allowing it to be enlarged at a later stage.
· It has no significant impact on the environment.
There are some disadvantes too:
· It isn't suitable for everywhere.
· It's not very pretty.
There are high-tech versions connected to the internet, intended for people exploring wilderness, but the same idea can be used to help people in the poorest parts of the world, people who aren't just playing at survival, who live in real wildernesses.