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Castle licence


If you wanted to build a castle in medieval England, you needed permission from the king. They’re supposed to be for the defence of the realm, but sometimes you just want to fake out the neighbours.

Great Green Wall

Senegal reforestation

It’s no surprise that one of the ways we’ll fight climate change is to plant a lot of trees. Across the entirety of northern Africa, millions of trees are being planted to help, and also to hold back the spread of the Sahara.