2-in-1 device also uses supercapacitor to store energy that could power computers and smartphones
UCLA researchers have designed a device that can use solar energy to inexpensively and efficiently create and store energy, which could be used to power electronic devices, and to create hydrogen fuel for eco-friendly cars. (more…)
COLLEGE PARK, Md. – Highly developed but water-scarce regions in China, such as Shanghai, Beijing, and Tianjin, are contributing to water depletion in other water-scarce regions of the country through imports of food, textile, and other water intensive products, according to a new study published in the journal Environmental Science & Technology. For example, purchasing cloth in Shanghai may not consume water directly, but the production of cloth requires cotton, which is water intensive to cultivate – indirectly contributing to the water scarcity in the less-developed cotton production regions. This dynamic also holds true for food and other products. Only 20% of Shanghai’s scarce water footprint, or the amount of scarce water consumed, is from local watersheds while 80% is from water resources of other water-scarce regions, such as Xinjiang, Hebei, and Inner Mongolia. (more…)
