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"The cryptocurrency uses as much CO2 a year as 1m transatlantic flights. We need to take it seriously as a climate threat Bitcoin's electricity usage is enormous. In November, the power consumed by the entire bitcoin network was estimated to be higher than that of the Republic of Ireland. Since then, its demands have only grown. It's now on pace to use just over 42TWh of electricity in a year, placing it ahead of New Zealand and Hungary and just behind Peru, according to estimates from Digiconomist. That's commensurate with CO2 emissions of 20 megatonnes - or roughly 1m transatlantic flights."

"Abstract Many people believe renewable energy sources to be capable of substituting fossil or nuclear energy. However there exist very few scientifically sound studies, which apply due diligence to substantiating this impression. In the present paper, the case of photovoltaic power sources in regions of moderate insolation is analysed critically by using the concept of Energy Return on Energy Invested (ERoEI, also called EROI). But the methodology for calculating the ERoEI differs greatly from author-to-author. The main differences between solar PV Systems are between the current ERoEI and what is called the extended ERoEI (ERoEI EXT). The current methodology recommended by the International Energy Agency is not strictly applicable for comparing photovoltaic (PV) power generation with other systems. The main reasons are due to the fact that on one hand, solar electricity is very material-intensive, labour-intensive and capital-intensive and on the other hand the solar radiation exhibits a rather low power density."

Muy interesante herramienta para pasar tablas de datos a visualizaciones gráficas, en vectores y personalizables... "RAW works with tabular data (i.e. information which is possible to record or track in a spreadsheet). There are many ways you can upload your data in RAW: Dropping a plain text file containing delimiter-separated values such as .csv or .tsv. File extension does not matter, as long as you use one of these delimters: comma, semicolon, tab or colon. Copying and pasting your data from a spreadsheet (e.g. Microsoft Excel, Google Docs, Apple Numbers...) or a text file. This is particularly helpful when you do not want to (or can not) export your data any time you change it or when you want to use only specific columns. Typing your data directly into the text area. While it is unlikely to use this option, it can be useful for editing your data."

"For more information about the event and to listen to the podcast go to the RSA event page: http://bit.ly/1jGN6C3 How will the 'collaborative commons' transform our lives? Jeremy Rifkin, one of the world's most popular public thinkers and political advisors, argues that capitalism will no longer be the dominant paradigm in the second half of the 21st century. Follow the RSA on Twitter: http://www.twitter.com/thersaorg Like the RSA on Facebook: http://www.facebook.com/thersaorg Our events are made possible with the support of our Fellowship. Support us by donating or applying to become a Fellow."

"... In addition to serving as a great explanatory example of the potential danger of AI, I have realized that paperclip maximizer is also a perfect allegory for capitalism. Where the artificial intelligence sought to maximize paperclips, the capital maximizer seeks to maximize capital. ... While this story of the capital maximizer might strike some as the anti-capitalist rantings of socialist idealism, it is not meant as such. Capitalism is the most powerful machine that humans have ever created. It can realize the benefits of technological progress and leverage them to improving the human condition better than any other economic system yet devised. The problem is in viewing the growth of capital as an ends and not a means. If we do not demand that our systems maximize the well-being of humans and the environment which sustains us, then all is lost."

"Select a country to view its environmental sustainability and social performance relative to the "safe and just space" framework and see how it compares with other countries. Blue wedges show social performance relative to a threshold associated with meeting basic needs (blue circle), green wedges show resource use relative to a biophysical boundary associated with sustainability (green circle), while grey wedges show indicators with missing data. Wedges with a dashed edge extend beyond the chart area. Ideally a country would have blue wedges that reach the social threshold and green wedges within the biophysical boundary. See the tables below for country-specific details."

"Contents:Notebook of Leonardo da Vinci ('The Codex Arundel'). A collection of papers written in Italian by Leonardo da Vinci (b. 1452, d. 1519), in his characteristic left-handed mirror-writing (reading from right to left), including diagrams, drawings and brief texts, covering a broad range of topics in science and art, as well as personal notes. The core of the notebook is a collection of materials that Leonardo describes as 'a collection without order, drawn from many papers, which I have copied here, hoping to arrange them later each in its place according to the subjects of which they treat' (f. 1r), a collection he began in the house of Piero di Braccio Martelli in Florence, in 1508. To this notebook has subsequently been added a number of other loose papers containing writing and diagrams produced by Leonardo throughout his career. Decoration: Numerous diagrams. "

"This book YOUNG & CREATIVE - Digital Technologies Empowering Children in Everyday Life aims to catch different examples where children and youth have been active and creative by their own initiative, driven by intrinsic motivation, personal interests and peer relations. We want to show the opportunities of digital technologies for creative processes of children and young people. The access to digital technology and its growing convergence has allowed young people to experiment active roles as cultural producers. Participation becomes a keyword when "consumers take media into their own hands". Digital technologies offer the potential of different forms of participatory media culture, and finally creative practices. YOUNG and CREATIVE is a mix of research articles, interviews and case studies. The target audience of this book is students, professionals and researchers working in the field of education, communication, children and youth studies, new literacy studies and media and information literacy."

"She demanded that all participating staff members surrender their phones and other such personal devices. The book you hold in your hands would not exist had high school been a pleasant experience for me… It was on those quiet weekend nights when even my parents were out having fun that I began making serious attempts to make stories in comics form. - Adrian Tomine, introduction to 32 Stories Computer Science Professor Calvin Newport's recent book, Deep Work, posits that all that shallow phone time is creating stress, anxiety, and lost creative opportunities, while also doing a number on our personal and professional lives.Author Manoush Zomorodi's recent TED Talk on how boredom can lead to brilliant ideas, below, details a weeklong experiment in battling smartphone habits, with lots of scientific evidence to back up her findings."

"The book examines the underlying principles that guide effective teaching in an age when all of us, and in particular the students we are teaching, are using technology. A framework for making decisions about your teaching is provided, while understanding that every subject is different, and every instructor has something unique and special to bring to their teaching.The book enables teachers and instructors to help students develop the knowledge and skills they will need in a digital age: not so much the IT skills, but the thinking and attitudes to learning that will bring them success. Book release date (final version): 1 April 2015."

"In 1973, near the height of the 'population bomb' panic, a computing programme called World1 offered up some predictions for the future. It anticipated a grim picture for humanity based on current trajectories. Tracing categories such as population, pollution and natural-resource usage, World1 calculated that, by 2040, human civilisation would collapse - a century after the best year to have been alive on the planet: 1940. This film was originally broadcast by the Australian Broadcasting Corporation (ABC) News as part of a report on predictions for the coming decades made by cutting-edge computing technology and leading thinkers of the time. The second segment features interviews with members of the Club of Rome, an elite think tank composed of government officials, academics and business leaders focused on the future of humanity. Their view is a bit sunnier, anticipating a world where global governments are forced to cooperate to solve complex problems, people widen their cultural horizons and work fewer hours, and limited consumption - not wealth - becomes a mark of prestige. Viewed today, it makes for an engrossing artifact, raising far more questions than it answers about humanity's ability to effectively predict its future and correct its course."

"Air pollution may be damaging every organ and virtually every cell in the human body, according to a comprehensive new global review. The research shows head-to-toe harm, from heart and lung disease to diabetes and dementia, and from liver problems and bladder cancer to brittle bones and damaged skin. Fertility, foetuses and children are also affected by toxic air, the review found."

"What is Tour Builder? Tour Builder is a new way to show people the places you've visited and the experiences you had along the way using Google Earth. It lets you pick the locations right on the map, add in photos, text, and video, and then share your creation. How is Tour Builder different from the existing "KML Tour" feature in Google Earth? Tour Builder is accessible from your web browser, makes it easy to add photos and videos to a sequence of locations on Earth, and then share links to these tours with your friends."

"eXeLearning is an easy to use authoring tool under GPL-2+ to create educational web contents. Installing eXeLearning on Ubuntu: sudo snap install exelearning eXeLearning generates interactive contents in HTML5 and other formats and it allows you to create websites including text, images, interactive activities, image galleries, evaluating rubrics, multimedia clips, games... All the educational materials can be exported in different formats: SCORM, IMS, ePub, responsive HTML website, XLIFF... eXeLearning is available for GNU/Linux, Microsoft Windows and Mac OS X. Go to https://exelearning.net/ for more download options."

Pero claro, no solamente para googleclasroom "Below is a list of ideas for those of you that are new to Google Classroom as well as ideas for teachers more experienced with digital classrooms. We will be adding to this list over time!"

Hasta donde pude ver funciona muy bien, incluso el audio generado en castellano... bastante poderosa, habrá que ver hasta cuándo es gratis su uso... "Edit video as easily as editing text! Do you need to create videos from images, audio files, video clips or screen grabs? Save yourself a lot of headaches by giving all of the painful parts to Video Puppet. Video Puppet will automatically create video clips from images, align audio and video segments, add captions, and even create a life-like narration audio from your text. To top it off, you'll be able to update the video easily when your content changes."

"Farmer N'Da Alphonse grows cocoa and has never seen the finished product. "To be honest I do not know what they make of my beans, " says farmer N'Da Alphonse. "I've heard they're used as flavoring in cooking, but I've never seen it. I do not even know if it's true." vpro Metropolis was a video project by Dutch broadcast organisation vpro, that ran from 2008 to 2015. Metropolis is made by a global collective of young filmmakers and TV producers, reporting on remarkable stories from their own country/city. We made a trip around the globe on one single issue: from local beauty ideals to Elvis impersonators, to what's it like being gay, or an outcast or a dog in different cultures."

Cheers erupted at a homeless camp in Victoria Tuesday when campers heard British Columbia's Supreme Court rejected the provincial government's bid to take down their tent city. The court's top judge refused the province's request to grant an injunction to force the estimated 100 homeless

"This article analyzes teacher strikes in Argentina during 2006-2012. It stands out how teacher strikes prevail over claims from other unions, and are shown to be relevant events for education policy just for some provinces and only for public schools. We found that none of the policy measures implemented over the last decade has proven to be effective in reducing conflict. Analyzing a dataset on labour unrest, this study builds an index of teacher labour conflict to better understand the evolution of teacher strikes over time and under the various provincial governments that integrate the Argentinian federal education system. The article shows no correlation between teacher labour unrest and the growth of private enrolment. However, we note that despite the lack of statistical correlation, teacher strikes should not be ruled out as an explanatory variable of the increase in private education in Argentina."

"1. Ken Robinson: crear condiciones para fomentar los talentos Ken Robinson es un asesor educativo, quien se ha enfocado en investigar la importancia de la creatividad en los sistemas de aprendizaje. En su charla llamada «Bring on the learning revolution!» expone cómo las escuelas estandarizadas deberían optar por un modelo personalizado y crear las condiciones necesarias para explotar los talentos de cada estudiante. 2. Christopher Emdin: los maestros convertidos en 'magos' En ocasiones la música, en este caso el hip-hop, puede ser utilizada como una herramienta pedagógica para formar mejores maestros. A esto se dedica el defensor de la ciencia, Christopher Emdin. En su charla de TED en el 2013, llamada «Teach teachers how to create magic», afirma que todas las personas tienen la 'magia' para cautivar y enseñar a otros. Además, muestra cómo los maestros pueden 'darle vida' al aula de clase. 3. Pearl Arrendo: una mujer y maestra ejemplar Pearl Arrendo es una profesora reconocida por haber establecido una escuela piloto donde los maestros enseñan a sus estudiantes a ser excelentes comunicadores. En su charla «My story, from gangland daughter to star teacher» cuenta su historia y cómo los profesores deben preocuparse por la vida de sus estudiantes. 4. Rita F. Pierson: los estudiantes aprenden de las personas que aprecian Rita F. Pierson es una profesora que se ha enfocado en estudiar los comportamientos dentro del aula de clase. En su inspiradora charla llamada «Every kid needs a champion», expone cómo los maestros deben conectarse con sus estudiantes en un nivel emocional, humano y personal. Esto dará como resultado el incremento de la motivación y el compromiso con el proceso de aprendizaje. 5. Ramsey Musallam: cultivar la curiosidad Ramsey Musallam es profesor de química y utiliza las nuevas tecnologías y el contenido multimedia para expandir la curiosidad de sus estudiantes. En el 2013, en su charla «3 rules to spark lear