Khan Academy ‘Artificial leaf’ makes fuel from sunlight Researchers led by MIT professor Daniel Nocera have produced something they’re calling an “artificial leaf”: Like living leaves, the device can turn the energy of sunlight directly into a chemical fuel that can be stored and used later as an energy source. The artificial leaf — a silicon solar cell with different catalytic materials bonded onto its two sides — needs no external wires or control circuits to operate. Simply placed in a container of water and exposed to sunlight, it quickly begins to generate streams of bubbles: oxygen bubbles from one side and hydrogen bubbles from the other. The creation of the device is described in a paper published Sept. 30 in the journal Science. The device, Nocera explains, is made entirely of earth-abundant, inexpensive materials — mostly silicon, cobalt and nickel — and works in ordinary water. “I think there’s going to be real opportunities for this idea,” Nocera says.
Dark Stories - Histoires macabres et inexplicables - Récits insolites, mythes et légendes Electricity from the sun and the wind Now you must evaluate the reception that you got to your initial presentation of the concept. You determine the scope of your initial project based on this reception. If it was overwhelmingly good, you could present a reasonable sized simple "by the book Earthship" as your project that you are requesting a permit for. If the reception was somewhat skeptical then you reduce the scope of what you are asking for. The point is to not ask for too much at first. What you are doing here is allowing an official the chance to see the concept before they are asked to risk their job on it. The point here is to determine just how small of a 'bite' to ask the inspector to swallow in this phase. You present this demonstration as a rammed earth thermal mass dwelling - not a rubber tire house. Another factor of your presentation is not to mention all the other systems at first. We are here to help you! > Earthship Biotecture Consultation
SlushBox.com: Lowbrow and Punk art you didn't even know you wanted Hydrogen produced by earth friendly WINDHUNTER Maritime Hydrogen Generation... - StumbleUpon Wikiversité US Home Internet Devices Suck Enough Energy to Power Silicon Valley Although appliances and consumer electronics are getting more efficient, they still represent about 35 percent of the energy consumed in U.S. homes. And it's not just the big appliances using up energy. A 2011 study from the Natural Resources Defense Council (NRDC) found that typical HD-DVR cable boxes consumed more electricity than a new Energy Star-rated refrigerator. Here's another silent energy consumer to add to the list: internet connection equipment. NRDC just released an analysis of small network equipment like routers and modems, finding that these devices together in a household consume about as much energy as a new flat-screen television. Just as with DVR boxes, the newest models for networking equipment feature far superior energy performance. Making that switch isn't easy today. And the switch would need to come from internet providers just as much as consumers, as a lot of customers get their routers and modems from service providers rather than purchasing them in stores.
H-Line Conversions - Hummer H1 & H2 Diesel and Green Fuel Conversions - Wichita, Kansas Facebook sienta las bases para ser el nuevo Google Mientras el presidente de Google, Eric Schmidt, defendía el pasado miércoles ante el senado de EE UU la imparcialidad del algoritmo de su buscador, Mark Zuckerberg ultimaba el anuncio del mayor giro estratégico de Facebook desde que se lanzara en 2006. La red social, con 800 millones de usuarios en el mundo, ha dejado de ser un sitio que solo conecta a personas para pasar a ser, además, una plataforma que conecta a la gente con las cosas que recogen su actividad diaria (servicios de música, cine, periódicos...). Un cambio que, aunque pueda parecer nimio sobre el papel, deberá preocupar a Google y a Apple, porque como el famoso caballo de Troya, el anuncio de Facebook esconde armas para dar la batalla a ambos rivales. Y a cada uno donde más le duele: al buscador, en la publicidad, y a Apple, en los contenidos. Igualmente, ahora, además de "me gustas" en otro sitios que luego aparecen en Facebook, se puede hacer cosas y que aparezcan "verbos" y "objetos directos". Información muy útil
Dimensions Accueil Un film pour tout public. Neuf chapitres, deux heures de maths, pour découvrir progressivement la quatrième dimension. Vertiges mathématiques garantis! Trouvez des informations supplémentaires pour chaque chapitre : voir "En détail". Cliquez sur l'image à gauche pour voir la bande-annonce (branchez vos haut-parleurs). Ce film est diffusé sous une licence Creative Commons. Maintenant avec encore plus de langues de commentaires et sous-titres : Commentaires en allemand, anglais, arabe, espagnol, français, italien, japonais et russe. Film produit par :Jos Leys (Graphiques et animations)Étienne Ghys (Scénario et mathématiques) Aurélien Alvarez (Réalisation et post-production)
SheerWind's INVELOX Wind Turbine Can Generate 600% More Energy Than Conventional Turbines US-based wind energy company SheerWind just unveiled the INVELOX – a tunnel-based wind turbine that can produce up to 600% more power than traditional wind turbines. The company states that after extensive field-testing, their new INVELOX turbine “significantly outperforms the traditional turbine” and could reduce installation capital costs to less than $750 per KW. The INVELOX energy system works by capturing ground-level breezes and funneling them through a tapering passageway that naturally accelerates wind flow. Unlike other turbines, it also minimizes environmental and animal impact, and it requires no government subsidies to be profitable. SheerWind claims that the INVELOX turbine can operate at wind speeds as low as 1 mile per hour, and it has generated a record high energy production capacity of 72%. + SheerWind Via Phys.org