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What is the true cost of gold? Is it paid for in currency per ounce or in the blood, sweat and toil of those who mine it? Or is the ultimate cost paid by the environment which is desecrated to find it?A book from the Pulitzer Center, published...

A detailed study by MIT has found the health cost savings of some climate change mitigation policies, such as cap-and-trade, greatly out-weigh the cost of the policy's implementation. Will this new research influence leaders at this months' UN Climate Summit?

The European Commission has proposed that member states cut carbon emissions by 40% below 1990 levels by 2030.

The effects of population growth on GCC.

While the use of solar cells is become increasingly widespread, the silicon technology used in many types is becoming obsolete. JP Casey looks at concentrated solar power, micro-trackers and perovskite compounds as innovations that could potentially improve solar efficiency.

Oil and gas rigs are some of the biggest moveable structures in the world. Modern rigs cost millions of dollars and can weigh up to 30,000 tons. So what does it take to move these engineering marvels? We ask David Wells, CEO of consultancy, and rig-moving specialists, Aqualis Offshore.

The 1,405MWe Angra-3 PWR nuclear reactor project is on again. The Brazilian Government has announced plans to complete the reactor, which will work alongside the other two at Angra, which is between Rio de Janeiro and Sao Paulo. The project is estimated to cost $5.6bn and is scheduled for completion in 2018.

Concentrated solar power (CSP) with energy storage is an upcoming renewable technology that promises to provide cost-effective power generation with improved efficiency.

An exhaustive global study has found that climate change is set to drive up energy demand significantly by 2050, suggesting policymakers and the energy industry need to take action now to prevent a surge in energy related costs over the next few decades.