أصدر مكتب الأمم المتحدة لتنسيق الشئون الإنسانية في الأراضي الفلسطينية المحتلة (أوتشا) تقريرا خاصا عن أزمة الكهرباء في غزة و فيما يلي نص التقرير كاملا:Since January 2010, there has been a serious deterioration in the supply of electricity in the Gaza Strip due to the reduced capability of the Gaza Power
التفاصيل...
Researchers at the Cornell University have taken inspiration from nature and tried to imitate the swaying of tree branches. So what is the difference between natural swaying of trees and energy-harvesting tree created by Cornell University researchers? The flapping
