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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.
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  • 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.
Martin Burrett

Planet Positive - Carbon Calculator - 76 views

www.planet-positive.org/how_2_calculator.php

carbon footprint carbon environment eco

shared by Martin Burrett on 06 Nov 11 - Cached
  • Martin Burrett on 06 Nov 11
     
    A lovely carbon calculator designed for children found via @martingibb. Enter the answers to a few questions about transport habits, energy and food and see how green your students are. http://ictmagic.wikispaces.com/PSHE%2C+RE%2C+Citizenship%2C+Geography+%26+Environmental
  • Steven Parker on 06 Nov 11
K Couch

The Carbon Cycle Game - 9 views

www.windows2universe.org/...carbon_cycle.html

carboncycle carbon science

shared by K Couch on 14 Nov 11 - Cached
  • K Couch on 14 Nov 11
     
    interactive game - travel through the carbon cycle
BTerres

How much carbon… - 64 views

www.informationisbeautiful.net/...how-much-carbon

CO2

shared by BTerres on 17 Jan 11 - No Cached
  • BTerres on 17 Jan 11
     
    How much CO2 is created by a banana? A wedding? A flight to New York? We teamed up with GE to turn 'tons of carbon' into an interactive visual landscape. Enter a CO2 value. Hit the 'random' button for serendipity. Or just click through objects like stepping stones. (There are nearly 200 objects so it may take a second to load) Designed by David McCandless
Martin Burrett

Radiocarbon dating Presentation - 0 views

www.pbs.org/...radiocarbon-dating.swf

science carbon dating

shared by Martin Burrett on 17 Jul 11 - No Cached
  • Martin Burrett on 17 Jul 11
     
    A great presentation explaining how Radio carbon dating works. http://ictmagic.wikispaces.com/Science
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. 
Roland Gesthuizen

Innovation Design In Education - ASIDE: A Year Without Worksheets - 151 views

theasideblog.blogspot.com/...year-without-worksheets.html

education innovation design teaching blog worksheet

shared by Roland Gesthuizen on 22 Jan 12 - No Cached
  • Roland Gesthuizen on 22 Jan 12
     
    we are proposing a year without worksheets. We are going to emphasize a year of personal teaching, original materials, innovative lessons, and imaginative activities. .. in bucking carbon-copied shortcuts, to hone in on layered, dynamic, self-pioneered worksheets that excite students with pictures and appeal. We will hopefully force ourselves to avoid the bluffing that comes with 30 minutes of "silent work at one's desk.
Gerri Rode

JPL Climate Time Machine - 55 views

climate.nasa.gov/...climateTimeMachine.cfm

shared by Gerri Rode on 09 Mar 12 - No Cached
  • Gerri Rode on 09 Mar 12
     
    Interactive on sea ice, sea level, carbon emissions, and average globaltemperature
Gerald Carey

EdComs Teachers - 8 Free resources for Science Teachers - 145 views

www.edcomsteachers.com/...Science

resources science secondary

shared by Gerald Carey on 23 Nov 11 - No Cached
  • Gerald Carey on 23 Nov 11
     
    These are high quality and specific at this stage. They include: * Carbon Footprint Toolkit * Free Road Safety Programme * Engineering resource * Give and let live - organ donation * How Science Works  and others...
Deborah Batzer

The Comic Book Periodic Table of the Elements - 177 views

www.uky.edu/Chemcomics

diigo chemistry science comics elements periodic periodictable

shared by Deborah Batzer on 29 Oct 09 - Cached
  • Deborah Batzer on 29 Oct 09
     
    This site contains comic book images linked to the chemical elements via the periodic table. Comics include Uncle $crooge, Metal Men, Metamorpho, Batman, Fantastic Four, Superman, and many more."> The Comic Book Periodic Table of the Elements BODY { color: rgb(0,0,0);} Th
missyhess5

ZerofootprintYouth - 8 views

calc.zerofootprint.net/youth

shared by missyhess5 on 19 May 20 - No Cached
  • missyhess5 on 19 May 20
     
    Youth Carbon Footprint Calculator
Brandie Hayes

Institute for Global Environmental Strategies >> Carbon City - 19 views

esseacourses.strategies.org/module.php

student activity reduction of greenhouse gases

shared by Brandie Hayes on 24 Apr 13 - No Cached
  • Brandie Hayes on 24 Apr 13
     
    Great activity to help students use NASA data in order to develop a community-based strategy to reduce greenhouse gas emission. Includes additional resources (articles, websites, NASA instruments) to help students learn about CO2 emissions, what is being done around the world, to decrease CO2 emissions, and what they can do. 
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
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  • 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!
Kenuvis Romero

Memory - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Memory

shared by Kenuvis Romero on 23 Jun 13 - No Cached
  • Encoding of working memory involves the spiking of individual neurons induced by sensory input, which persists even after the sensory input disappears (Jensen and Lisman 2005; Fransen et al. 2002). Encoding of episodic memory involves persistent changes in molecular structures that alter synaptic transmission between neurons. Examples of such structural changes include long-term potentiation (LTP) or spike-timing-dependent plasticity (STDP). The persistent spiking in working memory can enhance the synaptic and cellular changes in the encoding of episodic memory (Jensen and Lisman 2005).
  • Recent functional imaging studies detected working memory signals in both medial temporal lobe (MTL), a brain area strongly associated with long-term memory, and prefrontal cortex (Ranganath et al. 2005), suggesting a strong relationship between working memory and long-term memory. However, the substantially more working memory signals seen in the prefrontal lobe suggest that this area play a more important role in working memory than MTL (Suzuki 2007).
  • Consolidation and reconsolidation. Short-term memory (STM) is temporary and subject to disruption, while long-term memory (LTM), once consolidated, is persistent and stable. Consolidation of STM into LTM at the molecular level presumably involves two processes: synaptic consolidation and system consolidation. The former involves a protein synthesis process in the medial temporal lobe (MTL), whereas the latter transforms the MTL-dependent memory into an MTL-independent memory over months to years (Ledoux 2007). In recent years, such traditional consolidation dogma has been re-evaluated as a result of the studies on reconsolidation. These studies showed that prevention after retrieval affects subsequent retrieval of the memory (Sara 2000). New studies have shown that post-retrieval treatment with protein synthesis inhibitors and many other compounds can lead to an amnestic state (Nadel et al. 2000b; Alberini 2005; Dudai 2006). These findings on reconsolidation fit with the behavioral evidence that retrieved memory is not a carbon copy of the initial experiences, and memories are updated during retrieval.
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  • Physical exercise, particularly continuous aerobic exercises such as running, cycling and swimming, has many cognitive benefits and effects on the brain. Influences on the brain include increases in neurotransmitter levels, improved oxygen and nutrient delivery, and increased neurogenesis in the hippocampus. The effects of exercise on memory have important implications for improving children's academic performance, maintaining mental abilities in old age, and the prevention and potential cure of neurological diseases.
  • At the Center for Cognitive Science at Ohio State University, researchers have found that memory accuracy of adults is hurt by the fact that they know more, and have more experience than children, and tend to apply all this knowledge when learning new information. The findings appeared in the August 2004 edition of the journal Psychological Science.
  • Interference can hamper memorization and retrieval. There is retroactive interference, when learning new information makes it harder to recall old information[59] and proactive interference, where prior learning disrupts recall of new information. Although interference can lead to forgetting, it is important to keep in mind that there are situations when old information can facilitate learning of new information. Knowing Latin, for instance, can help an individual learn a related language such as French – this phenomenon is known as positive transfer.[60]
  • Methods to optimize memorization[edit] Memorization is a method of learning that allows an individual to recall information verbatim. Rote learning is the method most often used. Methods of memorizing things have been the subject of much discussion over the years with some writers, such as Cosmos Rossellius using visual alphabets. The spacing effect shows that an individual is more likely to remember a list of items when rehearsal is spaced over an extended period of time. In contrast to this is cramming which is intensive memorization in a short period of time. Also relevant is the Zeigarnik effect which states that people remember uncompleted or interrupted tasks better than completed ones. The so-called Method of loci uses spatial memory to memorize non-spatial information.[72]
Tonya Thomas

Instructional Design Models - 8 views

carbon.ucdenver.edu/...idmodels.html

instructionaldesign instructional design design theory learning instructional instructional_design e-learning social_learning social #sociallearning

shared by Tonya Thomas on 15 Sep 09 - Cached
  • Chris Bigenho on 15 Sep 09
     
    This is a great list that I found through Stephen Downes newsletter. Some great resources here. Very comprehensive.
  • Chris Bigenho on 15 Sep 09
     
    This is a great list that I found through Stephen Downes newsletter. Some great resources here
David Hilton

Constructivism - 0 views

carbon.cudenver.edu/...constructivism.html

constructivism education theory pedagogy teaching

shared by David Hilton on 04 May 09 - Cached
  • David Hilton on 04 May 09
     
    Constructivist theories grew out of the work of a couple of Russians around the time of the Russian Revolution. It is radical subjectivism dressed up as science, and has no scientific credibility whatsoever. It is used by radical educators to push their barrow that nothing the teacher knows is worth the student learning and that all knowledge is innate. It's bullsh*t. Theories like this rot are part of the reason that the bottom has dropped out of Western education and we have a generation who can't write. This should be resisted by any educator with an interest in educational excellence.
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