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Développement durable et efficacité énergétique
Pour un développement durable et pour l'efficacité énergétique. «Pour ce qui est de l’avenir, il ne s’agit pas de le prévoir mais de le rendre possible. »  Antoine de Saint-Exupéry
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Global warming in one unmistakably compelling chart

Global warming in one unmistakably compelling chart | Développement durable et efficacité énergétique | Scoop.it
If you have any doubt the balance of the globe has warmed over the last century, view this chart.


Produced by NASA, the chart illustrates how temperatures have compared to “normal” from 1880 to present, from pole to pole.

From the 1880 to the 1920s, blue and green shades dominate the chart, signaling cooler than normal temperatures in that era.  Then, from the 1930s to the 1970s, warmer yellow, oranges, and reds shades ooze in, balancing the cooler shades.

The rapid warming at the northern high latitudes especially jumps out in recent decades, reflecting “Arctic amplification” or more intense warming in the Arctic.  Although the warming is most pronounced up north, it is apparent at almost every latitude.

But since the 1970s, the blue and green shades rapidly erode and oranges and reds take over, dramatically.

Find more information at the link...


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IOANNIS APOSTOLOU's curator insight, September 13, 2013 6:26 AM

Global warming facts!

Owen Roberts, BSc, MBA's curator insight, September 23, 2013 5:16 AM

GLOBAL WARMING - Here is an chart developed by NASA that shows how much global temperatures have changed during the last 140 years.  Quite compelling. 

Hein Holthuizen's comment, September 29, 2013 1:00 AM
There is no doubt about an general increase of temperature. Whether it is worrysome is not to be seen on this small scale. We had colder periodes like ice ages and now we are likely in a interglacial. So global temperatures change over time. Nice picture btw.
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Why Carbon Footprints Matter: Calculating Your Impact

Why Carbon Footprints Matter: Calculating Your Impact | Développement durable et efficacité énergétique | Scoop.it
The energy that powers the world comes mostly from coal, gas, and oil, and that’s led us to CO2 levels over 390 parts per billion now, and climate change. We can think of climate change as a design question: where do we want to end up? Impact studies tell us what will happen to the planet as we warm up—it's basically a litany of horrors. At a 1.5 degree increase, we'll lose 10 percent of species. At 2 degrees, we'll lose 90 percent of coral reefs. At 3 degrees, 1 to 4 billion people will face water shortages, leading to war across the planet. We need to each understand the basic math behind energy and climate change so we can reach the right solutions. We need a massive shift to renewable energy, and we also need changes in our everyday lives. One first step is understanding your own carbon footprint. 
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Duane Craig's curator insight, February 7, 2013 7:24 AM

It's strange how so many are concerned about leaving debt to the next generations, but unconcerned about leaving a compromised environment.

Mercor's curator insight, February 7, 2013 7:58 AM

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Electric Car's curator insight, February 8, 2013 12:56 AM

What is YOUR Carbon footprint?

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Solar expected to make up 40 percent of PG&E's renewable portfolio by 2020

Solar expected to make up 40 percent of PG&E's renewable portfolio by 2020 | Développement durable et efficacité énergétique | Scoop.it
Solar power, which makes up a tiny part of Californias overall energy mix, will account for the biggest piece of the states renewable energy pie by the end of the decade, according to the states largest utilities.

Last year, Pacific Gas & Electric got most of its renewable energy from wind, bioenergy, geothermal and small hydropower dams. Solar accounted for about 1 percent. But that mix is quickly changing, and by 2020, the San Francisco-based utility expects solar to account for 40 percent of its renewable portfolio.
California's aggressive "Renewable Portfolio Standard" law requires utilities to purchase 33 percent of their electricity from renewable sources by 2020. Bioenergy, geothermal, solar, wind, wave and tidal power and small hydroelectric dams -- which cause less harm to the environment than large hydro dams -- all count toward meeting the law...
But solar is the fastest-growing piece of renewable portfolios, driven by federal stimulus funding for large solar power plants, a drop in solar panel prices and a boom in the number of developers competing for long-term utility contracts in California...


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Green Building to Accelerate, Survey Finds

Green Building to Accelerate, Survey Finds | Développement durable et efficacité énergétique | Scoop.it

Construction companies worldwide are shifting their business toward green building, with 51 percent of respondents to a survey by research firm McGraw-Hill Construction saying they expect more than 60 percent of their work to be green by 2015.

This is a significant increase from the 28 percent that said the same for their work in 2013 and the 13 percent in 2008, according to the company’s latest SmartMarket Report, World Green Building Trends.

This trend is not localized to one country or region; fom 2012 to 2015, the number of firms anticipating that more than 60 percent of their work will be green more than triples in South Africa; more than doubles in Germany, Norway and Brazil; and grows between 33 and 68 percent in the United States, Singapore, the United Kingdom, the United Arab Emirates and Australia, the report says...


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Jim Gramata's curator insight, March 5, 2013 5:50 PM

I think this will be the true global tipping point once big business sees there is so much money to be made in the green movement. It remains to be seen if that ends up being a good thing but the momentum is shifting and that is certainly good.

 

Mercor's curator insight, March 11, 2013 10:55 AM

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Map of the Day: Where Americans Use the Most Oil

Map of the Day: Where Americans Use the Most Oil | Développement durable et efficacité énergétique | Scoop.it
3.5 percent of U.S. counties consume more than 10 percent of the nation's oil.

America consumes a lot of energy. Counties play a large role in this overall consumption — and many of them contain large cities like Los Angeles and Chicago.

Deron Lovaas, the federal transportation policy director for the Natural Resources Defense Council, posted a map charting oil consumption by county on the NRDC staff blog Thursday.

The map is the product of a joint research effort of the NRDC, the Sierra Club, and the League of Conservation Voters to identify the most oil dependent locations across the United States.


As shown in the map (and accompanying list of national averages), oil consumption is geographically uneven and highly concentrated. Lovaas notes that "just 108 counties out of the nation's 3,144, or about 3.5 percent of the total consume more than 10 percent of the nation's oil." Not surprisingly, Los Angeles county had the most annual oil consumption, at nearly 1.9 billion gallons in 2010. Harris county, Texas, follows with 1.7 billion gallons, and Cook county, Illinois, takes third with 1.6 billion.


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