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  • Ocean power could supply entire cities

    Ocean power could supply entire cities

    Posted July 25, 2012 11:03:49

    Frightened by your power bill? A report released by the CSIRO today has found ocean power generated by waves, currents and tides could supply a city the size of Melbourne by 2050.

    In homes across the country, power bills are under scrutiny like never before as prices continue to rise.

    The CSIRO has also been running the ruler over a range of future energy options including ocean power which is generated from waves, tides and currents.

    Read an overview of the CSIRO’s wave energy report.

    Alex Wonhas, the director of a CSIRO program looking at energy transformation, says waves could be a big part of the future.

    “We found it could provide up to 10 per cent of Australia’s future energy needs by 2050. That’s roughly equivalent of a city the size of Melbourne,” he said.

    But that is likely to be a long way off. Mr Wonhas says getting ocean energy off the sea floor and into homes is fraught with environmental as well as technical and commercial barriers.

    “The technical challenges are really around making sure these devices last in the quite hostile ocean environment for maybe one or two decades.

    “The commercial challenge is about reducing the cost of these devices,” he said.

    Carnegie is a Perth-based company that is working on technology to harness the power of waves.

    It recently signed a deal with defence to supply power to Australia’s largest naval base at Garden Island near Perth.

    The company’s chief operating officer, Greg Allen, says the company has invested more than $60 million with another $16 million coming from state and federal governments.

    “The overall cost of the project is more than the revenue that we’ll get from the sale of powers will recover,” he said.

    While it may be more expensive for some time to come, Mr Allen says Australia risks falling behind without the investment.

    “It’s not just the Australian Government that’s doing this. Other governments around the world are funding the emerging renewable technologies – and in particular wave,” he said.

    Topics:tidal-energy, environment, alternative-energy, australia

  • AVAAST DON’T LET IGA LOSE IT’S WAY

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    GetUp!
    5:18 PM (1 hour ago)

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    Dear NEVILLE, 

    It’s been reported today that Metcash, the grocery wholesaler that operates grocery chain IGA, is on the brink of making a deal that would see it buying up pubs and profiting from dangerous and addictive poker machine revenue.[1]

    This development is an attempt to better compete with grocery giants Coles and Woolworths, who together own and operate more poker machines that the top five Las Vegas casinos. Let’s show IGA that we appreciate them for not owning harmful pokie machines – that we want them to stick to what they do best as an independent supermarket chain: serving their community. 

    As their executives sit down over the next few days to consider what to do next we have the power to show them that the community will back businesses that do the right thing by the community. Let’s encourage IGA to keep up the good work by demonstrating that integrity goes further in attracting a loyal customer base than making an easy buck from addicted gamblers at high loss poker machines.

    Will you add your name to our message of support for IGA to continue to do the right thing? http://www.getup.org.au/campaigns/pokies-reform/iga/dont-profit-from-problem-gambling

    Since learning about the significant profits Coles and Woolworths reap from society’s most vulnerable, we’ve received an outpouring of emails and calls from GetUp members letting us know about their decisions to shop for their family’s groceries at their local independent grocer, because they serve their community and refuse to profit from the pain of problem gambling. 

    One member wrote of her decision to take her business elsewhere: “The reward in making my stance is a great feeling… and happily knowing that around $100 a week of mine is being lost to their coffers and now goes to a more principled and more ethical competitor!” 

    Add your name to the message so IGA knows they have our support and they shouldn’t compromise their values for an easy dollar:

    http://www.getup.org.au/campaigns/pokies-reform/iga/dont-profit-from-problem-gambling

    Oftentimes doing the right thing is also what’s best for the bottom line. In this case, the bottom line is that people like GetUp member Karen, whose husband took his life because of his losses at dangerous machines owned by Woolworths, need the option of grocery shopping at a business that doesn’t have blood on it hands. 

    We can show Metcash that good business means making good decisions. IGA’s real competitive value lies in its reputation as a family-friendly alternative for shoppers who care about community values. 

    Click here to send a message to IGA, encouraging them to stay in the right.

    Thanks for taking action, 
    The GetUp team. 

    PS – Coles (owned by Wesfarmers) has admitted that it doesn’t consider its hotels a core business and is looking for a way to separate its hotels and poker machines from its liquor business. It is also believed that Coles is concerned about reputational damage caused by its ownership of high loss poker machines.[2] There is no need for Metcash to own poker machines in order to be competitive with liquor sales, and we can encourage them to make the right decision: http://www.getup.org.au/campaigns/pokies-reform/iga/dont-profit-from-problem-gambling

    [1] ‘Metcash takes on goliaths in a pub fight’. The Sydney Morning Herald, 25 July 2012. 
    [2] ‘Independent supermarkets deal hand on low prices’, Herald Sun, 9 July 2012.


    GetUp Action for Australia is an independent, not-for-profit community campaigning group. We use new technology to empower Australians to have their say on important national issues. We receive no political party or government funding, and every campaign we run is entirely supported by voluntary donations. If you’d like to contribute to help fund GetUp Action for Australia’s work, please donate now! If you have trouble with any links in this email, please go directly towww.getup.org.au. To unsubscribe from GetUp Action for Australia, please clickhere. Authorised by Simon Sheikh on behalf of GetUp Action for Australia, Level 2, 104 Commonwealth Street, Surry Hills NSW 2010.

  • The world is closer to a food crisis than most people realise

    The world is closer to a food crisis than most people realise

    Unless we move quickly to adopt new population, energy, and water policies, the goal of eradicating hunger will remain just that

    Algeria food riots

    Food riots in Algeria in 2008. Photograph: Fayez Nureldine/AFP/Getty Images

    In the early spring this year, US farmers were on their way to planting some 96m acres in corn, the most in 75 years. A warm early spring got the crop off to a great start. Analysts were predicting the largest corn harvest on record.

    The United States is the leading producer and exporter of corn, the world’s feedgrain. At home, corn accounts for four-fifths of the US grain harvest. Internationally, the US corn crop exceeds China’s rice and wheat harvests combined. Among the big three grains – corn, wheat, and rice – corn is now the leader, with production well above that of wheat and nearly double that of rice.

    The corn plant is as sensitive as it is productive. Thirsty and fast-growing, it is vulnerable to both extreme heat and drought. At elevated temperatures, the corn plant, which is normally so productive, goes into thermal shock.

    As spring turned into summer, the thermometer began to rise across the corn belt. In St Louis, Missouri, in the southern corn belt, the temperature in late June and early July climbed to 100F or higher 10 days in a row. For the past several weeks, the corn belt has been blanketed with dehydrating heat.

    Weekly drought maps published by the University of Nebraska show the drought-stricken area spreading across more and more of the country until, by mid-July, it engulfed virtually the entire corn belt. Soil moisture readings in the corn belt are now among the lowest ever recorded.

    While temperature, rainfall, and drought serve as indirect indicators of crop growing conditions, each week the US Department of Agriculture releases a report on the actual state of the corn crop. This year the early reports were promising. On 21 May, 77% of the US corn crop was rated as good to excellent. The following week the share of the crop in this category dropped to 72%. Over the next eight weeks, it dropped to 26%, one of the lowest ratings on record. The other 74% is rated very poor to fair. And the crop is still deteriorating.

    Over a span of weeks, we have seen how the more extreme weather events that come with climate change can affect food security. Since the beginning of June, corn prices have increased by nearly one half, reaching an all-time high on 19 July.

    Although the world was hoping for a good US harvest to replenish dangerously low grain stocks, this is no longer on the cards. World carryover stocks of grain will fall further at the end of this crop year, making the food situation even more precarious. Food prices, already elevated, will follow the price of corn upward, quite possibly to record highs.

    Not only is the current food situation deteriorating, but so is the global food system itself. We saw early signs of the unraveling in 2008 following an abrupt doubling of world grain prices. As world food prices climbed, exporting countries began restricting grain exports to keep their domestic food prices down. In response, governments of importing countries panicked. Some of them turned to buying or leasing land in other countries on which to produce food for themselves.

    Welcome to the new geopolitics of food scarcity. As food supplies tighten, we are moving into a new food era, one in which it is every country for itself.

    The world is in serious trouble on the food front. But there is little evidence that political leaders have yet grasped the magnitude of what is happening. The progress in reducing hunger in recent decades has been reversed. Unless we move quickly to adopt new population, energy, and water policies, the goal of eradicating hunger will remain just that.

    Time is running out. The world may be much closer to an unmanageable food shortage – replete with soaring food prices, spreading food unrest, and ultimately political instability– than most people realise.

     

    • Lester R. Brown is the president of the Earth Policy Institute and author of Full Planet, Empty Plates: The New Geopolitics of Food Scarcity, due to be published in October

  • Satellites See Unprecedented Greenland Ice Sheet Surface Melt

     

    Satellites See Unprecedented Greenland Ice Sheet Surface Melt

     

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    NASA Science News noreply@nasascience.org
    2:27 AM (6 hours ago)

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    NASA Science News for July 24, 2012

    For several days this month, Greenland’s surface ice cover melted over a larger area than at any time in more than 30 years of satellite observations. Nearly the entire ice cover of Greenland experienced some degree of melting, according to measurements from three independent satellites.

    FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/24jul_greenland/

    You are currently subscribed to snglist as: nevilleg729@gmail.com.

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    NASA Science News noreply@nasascience.org
    2:27 AM (6 hours ago)

    to NASA

     

    NASA Science News for July 24, 2012

    For several days this month, Greenland’s surface ice cover melted over a larger area than at any time in more than 30 years of satellite observations. Nearly the entire ice cover of Greenland experienced some degree of melting, according to measurements from three independent satellites.

    FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/24jul_greenland/

    You are currently subscribed to snglist as: nevilleg729@gmail.com.

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  • Population Control is a Key Sustainability Concept

    Google Alert – POPULATION GROWTH

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    Google Alerts googlealerts-noreply@google.com
    7:08 PM (47 minutes ago)

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    News 9 new results for POPULATION GROWTH
    Population growth, maize shortages lead to soaring prices
    Bizcommunity.com
    Relationship with population growth. The maize price shows an interesting relationship with the global population growth, which indicates how important a food commodity maize is, whether it be for human or livestock feed. The global population reached the 
    See all stories on this topic »
    Mosquito population growth: An unexpected downside to urban dwelling
    VOXXI (blog)
    This one, above all else, goes out to all those Miami natives that, better than anyone else, understand the unparalleled annoyance that incessant mosquitoes can provide on a daily basis. From OFF, to scented candles, to shady lotions bought at the local flea 
    See all stories on this topic »
    Bridging the demographic divide and other population challenges
    The Bay Citizen (blog)
    The Population Reference Bureau just released its 2012 World Population Data Sheet, showing that the world’s poorest countries will have the greatest population growth, due to high birth rates and a large youth population. Released just one week after the 
    See all stories on this topic »
    LAPC plans for area growth through 2050
    La Crosse Tribune
    The La Crosse area population is expected to swell to about 145000 by the mid-century mark, adding 25000 to 30000 residents in the next 40 years, according to Wisconsin projections. Preparing for that growth and other potential trends, such as an aging 
    See all stories on this topic »
    When is Moving Day? Population Trends Affect Phoenix Real Estate Recovery
    Knowledge@W. P. Carey
    Like everybody in real estate, the key driver is people, so I’m very interested to hear what Tom has to say about population growth because I see population as the key driver of the market. During the 2004-2005 era, we let the planners determine population 
    See all stories on this topic »
    Iranians resist call to boost population
    Financial Times
    Following the 1979 revolution, the Islamic regime pushed for rapid population growth in the hope of raising a “20m-strong army”. But following a census in 1986, the warnings started coming in: that growth was leading to mass unemployment and declining 
    See all stories on this topic »
    Population Control is a Key Sustainability Concept
    Justmeans
    On the 11th of July the international community remembered World Population Day, which is a date to draw attention to the consequences of population growth on natural resources, sustainability, urbanization, healthcare, etc. It’s a complex issue, which, 
    See all stories on this topic »
    Rents Rise as More Americans Flock Back Into Cities
    Traverse City Record Eagle
    Reporting on the latest Census figures, The Associated Press said this type of shift in population growth has not been seen since prior to 1920 and comes as today’s young adults “shun homebuying and stay put in bustling urban centers” to boost their odds in 
    See all stories on this topic »
    Looking to the Park’s growth
    Sherwood Park News
    The strategy is required under the county’s municipal development plan (MDP) and is expected to provide a scenario analysis of available growth options that incorporates a sustainable diversity of land use, potential population capture, sequencing of growth
    See all stories on this topic »


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  • Rise in temperatures and CO2 follow each other closely in climate change

    ScienceDaily: Earth Science News


    Rise in temperatures and CO2 follow each other closely in climate change

    Posted: 23 Jul 2012 01:27 PM PDT

    The greatest climate change the world has seen in the last 100,000 years was the transition from the ice age to the warm interglacial period. New research indicates that, contrary to previous opinion, the rise in temperature and the rise in the atmospheric carbon dioxide follow each other closely in terms of time.

    Existence of vitamin ‘deserts’ in the ocean confirmed

    Posted: 23 Jul 2012 01:26 PM PDT

    Using a newly developed analytical technique was used to identify long-hypothesized vitamin B deficient zones in the ocean.

    Polar bear evolution tracked climate change

    Posted: 23 Jul 2012 12:10 PM PDT

    A whole-genome analysis suggests that polar bear numbers waxed and waned with climate change, and that the animals may have interbred with brown bears since becoming a distinct species millions of years ago.

    Ancient alteration of seawater chemistry linked with past climate change

    Posted: 23 Jul 2012 10:48 AM PDT

    Scientists have discovered a potential cause of Earth’s “icehouse climate” cooling trend of the past 45 million years. It has everything to do with the chemistry of the world’s oceans.

    Fools’ gold found to regulate oxygen

    Posted: 23 Jul 2012 07:54 AM PDT

    As sulfur cycles through Earth’s atmosphere, oceans and land, it undergoes chemical changes that are often coupled to changes in other such elements as carbon and oxygen. Although this affects the concentration of free oxygen, sulfur has traditionally been portrayed as a secondary factor in regulating atmospheric oxygen, with most of the heavy lifting done by carbon. However, new findings suggest that sulfur’s role may have been underestimated.

    Croscat volcano may have been the last volcanic eruption in Spain, less than 13 thousand years ago

    Posted: 23 Jul 2012 06:51 AM PDT

    Using Carbon-14 dating and the analysis of fossilised pollen, researchers have  confirmed that one of the youngest volcanoes of the Iberian Peninsula is the Croscat Volcano, located in the region of La Garrotxa, Girona. They verified that its last eruption took place less than 13 thousand years ago.

    Traveling through a volcano: How pre-eruption collisions affect what exits a volcano

    Posted: 23 Jul 2012 06:48 AM PDT

    Scientists widely believe that volcanic particle size is determined by the initial fragmentation process, when bubbly magma deep in the volcano changes into gas-particle flows. But new research indicates a more dynamic process where the amount and size of volcanic ash actually depend on what happens afterward, as the particles race toward the surface.
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