Smoke from burning dung rises near homes of mud and grass where thousands of people ... the largest wetlands in Africa, in the Nile River floodplain. But since the 1960s the swamp has kept growing ...

That's because Egypt's best-known river is suffering from a crayfish invasion. Procambarus Clarkii to be exact. It's a native of Louisiana and relatively new to Egypt. Now it's clawing and burrowing ...

Peret Also called the Season of the Emergence. As the floodwaters went down, the land beside the Nile was left covered in thick dark mud which was very fertile. Farmers used this season to plant ...