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Dr. Subir Bhattacharjee in his laboratory at the University of Alberta

Q&A: Subir Bhattacharjee on the Geopolitics of Oil and Alberta’s Tar Sands

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Subir Bhattacharjee — a professor of mechanical engineering at the University of Alberta and one of Canada’s top water quality experts — tells Circle of Blue about the water cycle of the tar sands while he attends a high-level conference in Alberta, Canada.

EPA and Halliburton Skirmish — Promises of Safer Fracking Fluid

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After denying EPA disclosure request, Halliburton promises safer fracking fluid and more disclosure.

Water Demand is Flash Point in Dakota Oil Boom

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Production from the Bakken Shale is projected to use up to 5.5 billion gallons of water annually.

Fracking Regulations Vary Widely from State to State

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A look at how states across America are facing deep frack dilemmas.

EPA and State Department Square Off On Tar Sands Pipeline

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Water use and greenhouse gas emissions are major concerns with oil interests plays.

Infographic: Michigan Mineral Rights

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In Michigan, $178 million for nearly 120,000 acres of state-owned minerals in 20 counties.

Michigan Says It’s Ready For Next Drilling Boom

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“Fracking” is the injection of water and chemicals to rupture deep shale and release natural gas.

EPA Announces Study to Re-Examine the Health Risks of Hydrofracking

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States have begun implementing stricter standards for the controversial natural gas drilling process.

Bottomless Precedent: BP Gulf Gusher Endemic to Global Oil Problem

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Big spills and bigger damage to people and water resources around the globe.

Sudan’s Fight Against the Guinea Worm

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The Guinea worm has the potential to become the second completely eradicated disease in human history—but the political stability of one African nation will play a crucial role.

States Seek Profit, Regulation from Natural Gas Drilling

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Pennsylvania's latest budget proposal includes a tax on energy firms that tap the state’s shale gas reserves.