It is the kind of development that caters to our needs without jeopardizing the ability of future generations to meet theirs. This may include new technologies like desalination, solar power, wind power, and ICT, but can be expensive and unaffordable for many communities.

Example: Think of it like a shared pizza. You want to have enough slices to satisfy your hunger, but also make sure there's enough left for your friends who haven't eaten yet!

Egypt depends heavily on the Nile for its water, with 85% of it going towards agriculture. However, population growth and increased water demand strains water resources, and pollutants in the Nile from both local sources and upstream nations harm its quality.

Real-world Problem: Think of the Nile as the lifeblood of Egypt, and when it gets contaminated, the country's health is in danger. Imagine if your water supply at home started becoming scarce and polluted - what impacts would that have on your life?

Faris Farrag, an Egyptian farmer, has pioneered sustainable agriculture through aquaponics. This farming technique combines aquaculture (raising fish) with hydroponics (growing plants without soil) in a symbiotic environment. At his farm, Bustan, he uses fish tanks to provide 90% of the nutrients plants need, and the waste from the fish gets converted into nitrogen for the plants.

Real-world Example: Picture it as a perfect cycle – the fish produce waste that the plants clean up, and the plants grow food from the waste. It's like having a team where everyone does different jobs, but they all help each other out!