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Geoff kept all organic waste materials to be used as mulch and compost for soil building.Turning waste into a resource is a key Permaculture principle, and one that proved critical to this project.

After a typical rain event, the swales collected a million litres of water that was then absorbed into the landscape.

As the trees grew and dropped their leaves more valuable organic material was collected and used for mulch and soil building. The salt content on the site was drastically diminished after a couple of years.

Scientists in the area couldn’t believe they hadn’t just washed the salt out of the soil with massive amounts of water.

They are also developing a grey-water treatment system in the Zaatari camp for Syrian refugees in Jordan.

This will make it possible to grow vegetables onsite.

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