Earth
Can oil from tar sands be cleaned up?
Canadian tar sands contain the world's second-largest reserves of oil, but extracting it is a filthy process. Bacteria and steam may help to clean it up
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Canadian tar sands contain the world's second-largest reserves of oil, but extracting it is a filthy process. Bacteria and steam may help to clean it up
The climatic conditions that caused the "Medieval Warm Period" cannot explain modern temperature increases, researchers say