The GravityLight uses a sack of sand or stones to gradually pull a piece of rope through a dynamo mechanism which generates electricity to power an LED. It is a cheaper and more sustainable option than a solar powered light,...
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May 17
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Mar 26, 2012
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Scooped by SustainOurEarth onto Sustain Our Earth |
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Trois ans après le séisme meurtrier, le gouvernement lance un vaste programme de gestion territoriale destiné à mettre un frein à l’érosion des sols et aux inondations. L’initiative prévoit d’augmenter la couverture forestière de 27 % et pourrait créer jusqu’à 30 000 emplois. Via Jón Sallé Delete the scoop?
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