Could we reforest the Sahara desert ?

Is this the key to afforestation projects in arid or desert areas ? As hundreds of billion of trees have to be planted over the next decades to avert climate change, the question is of tremendous importance. As Cleantechnica reports, the Gulf state of Qatar is experimenting an interesting project – the Sahara Forest Project … Read more

Latest news of the Great green wall of Africa

With over 1,300 articles published here so far, it is sometimes hard to keep up with old topics. So for today’s post I would like to present you an update of the Great green wall of Africa

Back to 2010 I was writing that several African countries are willing to stop the Sahara desert to keep its southward expansion by planting millions of trees on almost 8,000 km (4,300 miles)

It seems the project is gaining speed as it received almost two billion dollars from the World Bank and as Senegal already planted more than 20,000 hectares (50,000 acres)

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Desertec first solar plant to start construction

Remember the Desertec project and how I was convinced ? Their goal is to build solar, wind and other renewable energies facilities to power North Africa, the Middle East and part of Europe. Well, I am not the only one as their first plant will start construction next year. With a capacity of 500 MW … Read more

Africa’s Great Green Wall

I once wrote that China planted a great green wall to stop desertification. It seems some African nations are willing to follow this example in order to stop the Sahara from going South.

Indeed to the BBC : “The Great Green Wall project is backed by the African Union and is aimed at halting the advancing Sahara Desert. The belt would be 15km (nine miles) wide and 7,775km (4,831 miles) long.

The dozen nations involved in this most ambitious project are lacking the necessary funds, and are calling rich nations for help.

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An interesting geoengineering idea

eucalyptus-forestI was previously noting that  the Sahara desert is slowly turning green. To a new study hurrying the process and extending it to the Australian outback by planting eucalyptus trees (left) could absorb our global CO2 emissions.

Indeed this geoengineering idea would absorb eight billion tons of carbon a year. But we shouldn’t forget that like with any geoengineering project this would need huge funds and many technical difficulties would arise.

All this is pretty interesting but for two trillion dollars per year, I believe that  investing in the protection of existing forests would prove as profitable.

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Could the Sahara desert become green again ?

We have seen it previously, the Amazon Rainforest could become a desert because of deforestation and climate change. As I noted in May a three degrees Celsius increase would destroy it by up to 75 percent. But could global warming help the Sahara region becoming green again ? To National Geographic it could be the … Read more

Is Desertec a sound idea ?

small-desertec-mapThe fact has been known for years:  harvesting the energy provided by the sun to a tiny fraction of the Earth could supply all the energy Humankind needs without greenhouse gases emissions or pollution due to operation.

This week many blogs and websites published articles on Desertec, a foundation that would like to install many concentrated solar thermal plants in the Sahara desert to provide a fraction of the electricity Europe needs.

But many problems will have to be solved : funding the project, transmitting the electricity through the desert and the Mediterranean sea and so on.

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