Stopping Desert Growth

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Changwon, Mantoe Phakathi/InfoSud-IPS - Au début, les voisins de Yacouba Sawadogo l’ont pris pour un fou. Comment planter des arbres allait sauver la terre craquelée de Gourga, village au nord-ouest du Burkina Faso, de l’avancée inexorable du désert ? Mais 30 ans plus tard, c’est bien une forêt d’une quinzaine d’hectares qui sert de rempart au sable rampant du Sahel. Depuis, les habitants qui avaient fui sont revenus cultiver leurs champs. Tandis que des experts du monde entier se bousculent à la porte du vieux paysan pour étudier sa méthode, qui consiste en l’amélioration d’une technique agricole traditionnelle appelée Zaï : retenir l’eau de pluie et utiliser les termites pour enrichir le sol. Burkina Faso : Yacouba Sawadogo, « l'homme qui a arrêté le désert » | Rue89 Planète Burkina Faso : Yacouba Sawadogo, « l'homme qui a arrêté le désert » | Rue89 Planète
Magnus Larsson: Turning dunes into architecture
The Sahara Forest Project combines two proven technologies in a new way to create multiple benefits: producing large amounts of renewable energy, food and water as well as reversing desertification. A major element of the proposal is a seawater-cooled greenhouse that creates a cool growing environment in hot parts of the world and is a net producer of distilled water from seawater. The second technology, Concentrated Solar Power (CSP) involves concentrating the sun's heat to create steam that drives conventional turbines, producing zero carbon electricity twice as efficiently as photovoltaics. The two technologies have very promising synergies that make the economic case even more attractive. Exploration Architecture, Sustainable architecture, Biomimicry, Sustainable architecture inspired by nature, Factor one hundred saving, Sustainability revolution, Michael Pawlyn, Restorative design, The Eden Project, The Eco-Rainforest, Las Palmas Water T Exploration Architecture, Sustainable architecture, Biomimicry, Sustainable architecture inspired by nature, Factor one hundred saving, Sustainability revolution, Michael Pawlyn, Restorative design, The Eden Project, The Eco-Rainforest, Las Palmas Water T
Incredible Sahara Forest Project to Generate Fresh Water, Solar Power and Crops in African Desert Incredible Sahara Forest Project to Generate Fresh Water, Solar Power and Crops in African Desert Can you imagine being able to produce enough water in the Sahara to grow crops there? Can you imagine harnessing sufficient quantities of solar power to supply electricity to cities in Africa and cities in Europe? Can you imagine producing a sustainable bio-fuel that doesn't impact on world food supplies? Charlie Paton, Michael Pawlyn and Bill Watts can and what's more they can imagine all these happening in the same place at the same time.
Michael Pawlyn | Profile on TED.com
Growing a wall across Africa - Brainiac Brainiac blogger Kevin Hartnett is a writer in Columbia, South Carolina. He can be reached here. Leon Neyfakh is the staff writer for Ideas. Amanda Katz is the deputy Ideas editor. Stephen Heuser is the Ideas editor. Growing a wall across Africa - Brainiac