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dpurdy

Hydrogen vehicle - Wikipedia, the free encyclopedia - 13 views

en.wikipedia.org/...Hydrogen_vehicle

hydrogen what form infrastructure current

shared by dpurdy on 19 Mar 12 - Cached
    • dpurdy
      dpurdy on 19 Mar 12
       
      Is hydrogen sustainable? depends on the source. see this highlight.
  • While methods of hydrogen production that do not use fossil fuel would be more sustainable
  • The challenges facing the use of hydrogen in vehicles include production, storage, transport and distribution.
  • ...3 more annotations...
  • The hydrogen infrastructure consists mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations like those found on a hydrogen highway. Hydrogen stations which are not situated near a hydrogen pipeline can obtain supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen tank trucks or dedicated onsite production.
  • Hydrogen use would require the alteration of industry and transport on a scale never seen before in history. For example, according to GM, 70% of the U.S. population lives near a hydrogen-generating facility but has little access to hydrogen, despite its wide availability for commercial use.[64] The distribution of hydrogen fuel for vehicles throughout the U.S. would require new hydrogen stations that would cost, by some estimates approximately 20 billion dollars[65] and 4.6 billion in the EU.[66] Other estimates place the cost as high as half trillion dollars in the United States alone.[67]
  • Hydrogen fuel does not occur naturally on Earth and thus is not an energy source, but is an energy carrier. Currently it is most frequently made from methane or other fossil fuels. However, it can be produced from a wide range of sources (such as wind, solar, or nuclear) that are intermittent, too diffuse or too cumbersome to directly propel vehicles. Integrated wind-to-hydrogen plants, using electrolysis of water, are exploring technologies to deliver costs low enough, and quantities great enough, to compete with traditional energy sources.[2]
  • dpurdy on 19 Mar 12
     
    Fuel cell cars are expensive.  The fuel cell costs a lot
Jac Londe

Startup turns carbon dioxide into fuels - 1 views

phys.org/...rtup-carbon-dioxide-fuels.html

co2 dioxyde carbon carbon dioxide fuels science

shared by Jac Londe on 18 Jun 12 - No Cached
  • Today, carbon dioxide (CO2) is a hot topic. Scientists around the globe are searching for ways to store, dispose of, or prevent the formation of the greenhouse gas, which is a major driver of global climate change. Liquid Light hopes to take this concept one step further and harness waste CO2 as a source of carbon to make industrial chemicals and fuels.
  • Take CO2 and mix it in a water-filled chamber with an electrode and a catalyst. The ensuing chemical reaction converts CO2 into a new molecule, methanol, which can be used as a fuel, an industrial solvent or a starting material for the manufacture of other chemicals.
  • Bocarsly likes to call the process "reverse combustion" because it is like running a burning reaction backwards. Instead of burning fuel and oxygen to produce CO2, the CO2 converts back into fuel and oxygen.
  • ...2 more annotations...
  • Cole set up a flask containing a solution of CO2 and a pyridinium catalyst dissolved in water. In place of sunlight, which emits a broad spectrum of wavelengths of light, she shined on the flask a blue light-emitting diode (LED) because it gives off certain wavelengths that are highly efficient at driving the reaction. In the flask she placed an electrode that is activated by particles of light, or photons. "We used a semiconductor electrode that would allow us to substitute light for electricity," said Cole.
  • The Princeton scientists did some additional studies, and made a surprising discovery: They could turn CO2, which contains only one carbon, into a compound with a carbon-carbon bond, which vastly increases the possibilities for creating commercial applications.
Caroline Dutton

Health - 0 views

www.cleancookstoves.org/...health-impacts.html

clean cookstoves health research project 2013

shared by Caroline Dutton on 12 Feb 13 - No Cached
  • The World Health Organization (WHO) estimates that exposure to smoke from the simple act of cooking is the fifth worst risk factor for disease in developing countries, and causes almost two million premature deaths per year – exceeding deaths attributable to malaria or tuberculosis.
  • Women in developing countries are also at risk of head and spinal injuries, pregnancy complications, and maternal mortality from the strenuous task of carrying heavy loads of firewood or other fuels. Frequent exposure to cookstove smoke can also cause disabling health impacts like cataracts, which affect women more than men, and is the leading cause of blindness in developing countries.
  • Rudimentary wood-fired cookstoves and open fires emit fine particles, carbon monoxide, and other pollutants at levels up to 100 times higher than the recommended limits set by WHO
  • ...5 more annotations...
  • A randomized-control study in Guatemala led by the University of California, Berkeley, found that halving exposure to indoor air pollution with a chimney stove brought about a reduction in severe pneumonia, and that larger reductions in exposure had more pronounced effects. A systematic review of all available studies on the link between solid fuel use and child pneumonia has found an almost doubling of risk for those exposed.
  • Burns from open fires and unsafe cookstoves are another insidious risk faced by poor households dependent on kerosene, open fires, and unstable metal or clay cookstoves, contributing to a substantial percentage of the estimated 300,000 burn deaths that occur annually
  • While the link between exposure to cookstove smoke and a wide range of health problems such as pneumonia, chronic obstructive pulmonary disease, and lung cancer is well established, the current body of evidence linking cookstoves with other potentially important health effects is compelling but less documented
  • Nearly all of the existing evidence is based on observational studies that compare groups using open fires and traditional cookstoves with those using cleaner fuels, with very little being directly obtained from studies that directly measure the effects of interventions.
  • More evidence is needed to demonstrate that the levels of exposure reduction delivered by clean cookstove and fuels will result in declines in related illnesses and deaths.
  • Caroline Dutton on 12 Feb 13
     
    This is the Global alliance for Clean Cookstoves website. They offer much information about the issues surrounding the topic and their action plan for affecting change!
Susan Smith

More Remote Learners in Your Future | From the Bell Tower - 7/16/2009 - Library Journal - 0 views

www.libraryjournal.com/...CA6671395.html

blog education teaching learning elearning blended learning technology

shared by Susan Smith on 23 Jul 09 - Cached
  • Susan Smith on 23 Jul 09
     
    What does this have to do with higher education? High gas prices got adult learners questioning the value of driving an hour each way to a college campus. Suddenly, online learning became vastly more attractive to a whole segment of higher education's market. Articles about fuel prices driving students to online courses became as prevalent as those about the impact of the recession on higher education are right now. While the price of fuel has retreated to a more manageable range, the number of Americans flocking to online higher education has shown no such decline.
Marc Patton

Funds | Fuel Up To Play 60 - 0 views

school.fueluptoplay60.com/...funds_for_futp60.php

Grants

shared by Marc Patton on 28 Jun 12 - No Cached
  • Marc Patton on 28 Jun 12
     
    Up to $4,000 per year is available to any qualifying K-12 school enrolled in Fuel Up to Play 60. The competitive, nationwide funding program can help your school jumpstart and sustain healthy nutrition and physical activity improvements.
scott klepesch

A trip into the field: Collecting stories of design, learning, and place - The Third Teacher + - 37 views

thethirdteacherplus.com/...s-of-design-learning-and-place

field trip collecting stories design

shared by scott klepesch on 08 Sep 13 - No Cached
  • Strange as it may seem, we think field trips are more of a mindset and lifestyle than anything else. A mindset central to learning and design. When we go on field trips, we become students of the world––our awareness is heightened, our inspiration is fueled, and our understanding is deepened. Life is a series of really awesome field trips. 
  • scott klepesch on 08 Sep 13
     
    "Strange as it may seem, we think field trips are more of a mindset and lifestyle than anything else. A mindset central to learning and design. When we go on field trips, we become students of the world--our awareness is heightened, our inspiration is fueled, and our understanding is deepened. Life is a series of really awesome field trips. "
Kimberly Brosan

HowStuffWorks Green Living - Energy & Alternative Fuels - 1 views

hsw.libguides.com/content.php

libguides EarthDay greenliving environment recycle conservation global_warming globalwarming energy organic resources tools

shared by Kimberly Brosan on 25 Feb 09 - Cached
  • Kimberly Brosan on 25 Feb 09
     
    From How Stuff Works--Whether you want to know more about building sustainable communities to exploring alternative fuels and energy conservation or simply "go organic" at home - you'll find the resources you need to start living green.
Martin Burrett

Fuel the Brain Educational Games | Play Time Tunnel - 4 views

www.fuelthebrain.com/...play.php

maths numeracy games time clock

shared by Martin Burrett on 23 Aug 11 - No Cached
  • Martin Burrett on 23 Aug 11
     
    A good maths game where players fly a spaceship through a time tunnel, collecting fuel as you go. Set a clock to the correct time to go to the next stage. There are four different levels of time-telling ability. http://ictmagic.wikispaces.com/maths
Florence Dujardin

Looking to the future: M-learning with the iPad - 1 views

researchcommons.waikato.ac.nz/...5050

education iPad evaluation

shared by Florence Dujardin on 09 Nov 12 - No Cached
  • Florence Dujardin on 09 Nov 12
     
    Might Apple's new iPad gain unprecedented traction in education, or is just another example of the over-hyping of new devices in a time of technological determinism (Postman, 2000)? This paper explores the potential affordances and limitations of the Apple iPad in the wider context of emergent mobile learning theory, and the social and economic drivers that fuel technology development. Against the background of effective teaching and learning, the functionality offered by the iPad, and its potential uses for learning, are discussed. A critical review of the way the iPad may support learning, that draws on learning theory, contemporary articles and e-learning literature, suggests that the device may offer an exciting platform for consuming and creating content in a collaborative, interactive way. However, of greater importance is that effective, evidence-driven, innovative practices, combined with a clear-sighted assessment of the advantages and limitations of any product, should take priority over the device itself.
Elizabeth Resnick

Climate Science? There's an App For That | Climate Central - 0 views

www.climatecentral.org/...science-theres-an-app-for-that

climate science app iPad

shared by Elizabeth Resnick on 19 Apr 12 - No Cached
  • Elizabeth Resnick on 19 Apr 12
     
    Whether you're interested in keeping tabs on Arctic sea ice, finding a renewable fuel source close to your home, or monitoring corporations' carbon dioxide (CO2) emissions, there's an app for that. 
Steven Szalaj

Phil Hansen: Embrace the shake | Talk Video | TED - 39 views

new.ted.com/...phil_hansen_embrace_the_shake

creativity Art TED

shared by Steven Szalaj on 15 Feb 14 - No Cached
  • Steven Szalaj on 15 Feb 14
     
    Creativity can be fueled by limitations.
Martin Burrett

Enercities - 36 views

enercities.eu

eco environment games simulation

shared by Martin Burrett on 19 Mar 14 - No Cached
  • Martin Burrett on 19 Mar 14
     
    This is a superb environmental game which is reminiscent of the early SimCity games. Build a wonderful town, manage your fossil fuels wisely and keep the inhabitants happy. A free sign up is required. ictmagic.wikispaces.com/PSHE%2C+RE%2C+Citizenship%2C+Geography+%26+Environmental
Deb White Groebner

For the Love of Learning: Pink, Godin, Kohn and asymptotes - 56 views

www.joebower.org/...godin-kohn-and-asymptotes.html

learning intrinsic_motivation education

shared by Deb White Groebner on 06 Mar 10 - No Cached
  • Deb White Groebner on 06 Mar 10
     
    Value of reaching for unattainable "mastery" vs. dead-end scores: Fueling meaningful learning over fabricated performance.
Martin Burrett

BBC Questionaut - 73 views

www.bbc.co.uk/...play_popup.shtml

maths English science quiz animation numeracy Literacy BBC

shared by Martin Burrett on 20 Aug 11 - Cached
  • Martin Burrett on 20 Aug 11
     
    I love this site from the BBC with stunning visuals and a great soundtrack. Travel through a strange world answering questions about English, maths and science earning fuel for your hot air balloon. Click on the characters to unlock the questions. Designed for KS2. http://ictmagic.wikispaces.com/Cross+Curricular
Ruth Howard

The "Shock Doctrine" comes to your neighborhood classroom - Salon.com Mobile - 43 views

mobile.salon.com/...index.html

shock doctrine economics schoolreform educationreform education

shared by Ruth Howard on 14 Sep 11 - No Cached
  • Ruth Howard on 14 Sep 11
     
    via @IanChia Capitalism and Technology take advantage of economic downturn (Shock Doctrine tactics) which fuel policies with vested interests not education reform at heart.
Justin Medved

PopTech 2009: Michael Pollan on "sustainable food" - 30 views

vimeo.com/7528069

food sustainability

shared by Justin Medved on 13 Nov 09 - Cached
  • Justin Medved on 13 Nov 09
     
    Author and activist Michael Pollan is a passionate advocate for sustainable food. In his compelling talk at PopTech, he explores how our industrial food system is keeping us overly dependent on fossil fuels, destroying our environment, and making us sick. Breaking this cycle requires fundamentally changing our relationship to food - and eating more meals together. - awesome!
xtreker15

College students work to turn algae into fuel - Your Houston News: News - 18 views

www.yourhoustonnews.com/...9a-5ea2-a519-19f60532a4bc.html

college students algae fuel houston news oil biofuels

shared by xtreker15 on 06 Jul 11 - No Cached
  • xtreker15 on 06 Jul 11
     
    Students building the future 
Martin Burrett

Designing Education - 8 views

ukedchat.com/...designing-education

design engineering create creating making

shared by Martin Burrett on 10 Jan 19 - No Cached
  • Martin Burrett on 10 Jan 19
     
    "Many of us will have fond memories of children's TV engaging us to turn our used bottles into rockets, our wooden spoons into cartoon character puppets, and attaching googly eyes to anything which keeps still for more than 3 seconds! Schools are great at turning recycling into creativity, and design is at the heart of this. Later, the skills pupils learn turning pasta into planes and tins into trains fuel are the beginning of making the engineers and artisans of the future."
Devin Page

Henry Clay and the American System for kids *** - 6 views

www.american-historama.org/...american-system.htm

resources

shared by Devin Page on 11 Apr 18 - No Cached
  • Taxing all foreign goods, to boost the sales of US products and protect manufacturers from cheap British goods
  • ● Introducing a protective Tariff to enable the nation to raise money from these taxes and at the same time protect the nation's goods from cheaper priced foreign items
    • Devin Page
      Devin Page on 11 Apr 18
       
      Which region of the country did not like tariffs that were meant to help manufacturers in the north?
  • Roads and canals were built that enabled Americans to travel and the Cumberland Road, the Erie Canal were constructed
    • Devin Page
      Devin Page on 11 Apr 18
       
      Where did the Cumberland Road take travelers? How about the Erie Canal?
  • ...3 more annotations...
  • The American System helped to fuel the belief in the Manifest Destiny of the United States
    • Devin Page
      Devin Page on 11 Apr 18
       
      So which region probably benefited from the American system?
  • The American System helped to fuel the belief in the Manifest Destiny of the United States
  • ● Henry Clay's American System eventually ran out of steam during the administration of President Jackson
    • Devin Page
      Devin Page on 11 Apr 18
       
      Which region of the country seemed to most supprt Andrew Jackson?
dawnprovost

How building design changed after 9/11 - 6 views

theconversation.com/esign-changed-after-9-11-64580

Building Design Essay

shared by dawnprovost on 22 Jan 18 - No Cached
  • When exposed to the high temperatures created by burning airplane fuel, steel columns in both towers lost strength, putting too much load on other structural supports.
    • dawnprovost
      dawnprovost on 22 Jan 18
       
      Proof for claim the the building's structure could not actually maintain its integrity.
  • When exposed to the high temperatures created by burning airplane fuel, steel columns in both towers lost strength, putting too much load on other structural supports.
  • Center towers lost strength rapidly when the fire reached 400 degrees Fahrenheit. Concrete heated to that temperature, though, doesn’t undergo significant physical or chemical changes; it maintains most of its mechanical properties. In other words, concrete is virtually fireproof.
    • dawnprovost
      dawnprovost on 22 Jan 18
       
      Supports other article that explains the difference between temperature and heat.
  • dawnprovost on 22 Jan 18
     
    MLA Citation: In-text Citation: Summary: Evaluation: Reflection:
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