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Expo 2008, the international exposition on water and sustainable development, opened its doors to the world on Saturday in the Spanish city of Zaragoza.

Situated along Spain’s largest River, the Ebro, the 62-acre expo aims to inform people on global water issues and serve as a discussion forum for advocates and international policy makers. A goal of the expo is to produce a “Zaragoza Charter” which will detail recommendations to address such issues as access to clean water, water scarcity, water wars, and water conservation.

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As the price of oil continues to climb, we are beginning to get a glimpse of what the post peak-oil world may  look like, and it’s not entirely pretty.

Protests in Europe have been widespread, as Europeans who already pay twice that of our US cousins for fuel begin to feel the financial consequences of consistent price increases.

Truck drivers in Spain and France have blockaded major roadways and paralysed traffic on major city arteries. Meanwhile in the UK, similar protests by truck drivers - who claim they are rapidly being forced out of business by high fuel prices - have taken place across the country.

Adding to the chaos, Shell tanker drivers chose the same weekend to strike over pay disputes, causing many petrol (gas) stations to run out of fuel. Government calls to avoid panic buying have predictably caused a peak-oil dress rehearsal, with long queues forming on many petrol station forecourts.

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Solar thermal energy plants focus the glare of the Sun’s rays on a central location to create heat, which is then turned into electricity. Various methods exist to concentrate the solar radiation, including parabolic troughs, power towers with mirrors that track the Sun (heliostats), parabolic dishes, and Fresnel reflectors. See a history of solar thermal energy.

For comparison with solar photovoltaics, see the world’s 13 biggest photovoltaic solar energy projects.

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In case you missed them the first time around, here are the top 10 international environmental headlines that made news in the blogosphere for the week of March 31 - April 6.

1. Asia — United Nations Climate Change Talks: “Kyoto II” climate talks open in Bangkok

“The first formal talks in the long process of drawing up a replacement for the Kyoto climate change pact opened in Thailand on Monday with appeals to a common human purpose to defeat global warming.

‘The world is waiting for a solution that is long-term and economically viable,’ U.N. Secretary-General Ban Ki Moon said in a video address to the 1,000 delegates from 190 nations gathered in Bangkok.

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International demand for solar energy has been steadily growing by 20-25% a year for the past two decades. In the United states, solar energy growth is about 60% a year. Looking at how fast solar energy plants are growing and how large they’re becoming year by year is reveals that the future for solar is shining bright.

World’s Largest Photovoltaic (PV) Solar Power Plants (Proposed and Operational)

By 2011, Deming, New Mexico, USA will be the home of the world’s largest solar power plant. This 300 Megawatt solar facility will be 15 times the size of the current largest solar plant on the planet. New Solar Ventures and Solar Torx are the companies behind the project. The solar energy plant will cover as many as 1,300 hectares and employ between 300 and 400 people. The project’s planners estimate that the plant will supply enough energy to power 240,000 homes. (Photo: Flickr. Source: Reuters.)

The Solana solar plant, 70 miles from Pheonix, near Gila Bend, Arizona, USA, will compliment the Deming plant when both begin operations in 2011. It will produce 280 megawatts of energy, provide 1,500 jobs, and cover an area of 769 hectares. The solar power facility will be the child of Abengoa Solar and Arizona Public Service Company. However, the project depends on the United States Congress to renew clean energy tax credits, which would otherwise expire at the end of 2008. (Photo: APS. Source: Newlaunches via EcoFuss.)

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What makes the energy consumption survey at Bosquevirtual.com unique–if you can get past the Forest Gump theme song in the site’s video promo–is the ambitious, tech-heavy cyber-activism sponsored by the survey’s Spanish creators, Union Fenosa.

For each person who takes the survey, Union Fenosa donates 1 Euro to Acciónatura, a Spanish organization that uses the money to reforest the Atlantic Forest in Brazil.

Bosquevirtual, or “Virtual Forest,” has also teamed up with Second Life, a 3D web Mecca for internet socializing. Along with the actual donation to reforestation, then, every two surveys completed generates the planting of a virtual tree in a virtual forest in the Second Life 3D world.

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