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“Legalizar la droga es la solución para acabar con el narcotráfico”

“Legalizar la droga es la solución para acabar con el narcotráfico” | Spread your wings | Scoop.it
Vargas Llosa presenta su obra periodística en tres volúmenes y ofrece una clase magistral sobre la actualidad y la relación entre periodismo y literatura...
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“Legalizar la droga es la solución para acabar con el narcotráfico”

“Legalizar la droga es la solución para acabar con el narcotráfico” | Spread your wings | Scoop.it
Vargas Llosa presenta su obra periodística en tres volúmenes y ofrece una clase magistral sobre la actualidad y la relación entre periodismo y literatura...
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New study: There is enough wind potential on Earth's surface to power human civilization 100 times over

New study: There is enough wind potential on Earth's surface to power human civilization 100 times over | Spread your wings | Scoop.it

At the moment, wind power supplies about 4.1 percent of electric power in the United States. Still a bit player. Yet there’s a whole lot of untapped wind left in the world. Wind whipping through the Great Plains. Wind gusting off the shores. Wind circulating high up in the sky. So what would happen if we tried to harvest all of that wind?

 

We’d have enough energy to power the world. At least in theory. A new study published this week in Nature Climate Change finds that there’s enough wind potential both on the Earth’s surface and up in the atmosphere to power human civilization 100 times over. Right now, humans use about 18 terawatts of power worldwide. And, technically, the study found, we could extract about 400 terawatts of wind power from the Earth’s surface and 1,800 terawatts of power from the upper atmosphere.

 

Even the most optimistic near-term projections for wind power, however, tend to be more restrained. In 2008, the U.S. Department of Energy released a comprehensive report estimating that wind power could provide, at most, 20 percent of U.S. electricity by 2030. And for that to happen, the cost of wind power would have to keep plunging, the number of turbines built would have to steadily increase by about 14 percent each year, and utilities would have to build new transmission lines to accommodate the extra energy.


Via Dr. Stefan Gruenwald
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Come è nata la più grande associazione scientifica

Come è nata la più grande associazione scientifica | Spread your wings | Scoop.it
164 anni fa nasce l'American Association for the Advancement of Science, la maggiore organizzazione internazionale per la promozione della ricerca, che pubblica Science...
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Biohybrid: Scientists have combined a spinach photosynthetic protein with silicon technology

Biohybrid: Scientists have combined a spinach photosynthetic protein with silicon technology | Spread your wings | Scoop.it

An interdisciplinary team of researchers at Vanderbilt University have developed a way to combine the photosynthetic protein that converts light into electrochemical energy in spinach with silicon, the material used in solar cells, in a fashion that produces substantially more electrical current than has been reported by previous “biohybrid” solar cells.

 

“This combination produces current levels almost 1,000 times higher than we were able to achieve by depositing the protein on various types of metals. It also produces a modest increase in voltage,” said David Cliffel, associate professor of chemistry, who collaborated on the project with Kane Jennings, professor of chemical and biomolecular engineering.


Via Dr. Stefan Gruenwald
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