Earth science – Page 9
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ResearchAntimony recovery lights up lamp waste recycling
Green method produces fertiliser as a byproduct
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ResearchUnique compounds let earthworms finish off leaves
Chemicals reduce toxicity of plant polyphenols and allow worms to recycle leaves, improving soil fertility
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NewsFailure to allay public concerns hobbling UK fracking
More facts, data and technical assessments won’t soothe worries when people want greater public debate of risks and benefits
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ResearchIron found in ancient rock is recycled from bacteria
Isotopic analysis suggests iron in banded rock formations can be traced back to ancient bacteria
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ResearchSewage offers attractive source of precious metals
US Geological Survey team finds valuable metals in treated sewage and is working on the difficult problem of extraction
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ResearchEngineered bacteria synthesise palladium biosorbent
Biomolecule to help decontaminate water by recovering palladium that has escaped from catalytic converters
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ResearchFish sperm spawns rare earth metal recycling idea
Technique could provide a cheap, green way of recovering scarce metals from electronic waste
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FeatureEngineering the climate
Could technologies that modify the Earth’s climate control systems help us limit global temperature rises? Nina Notman investigates
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ResearchEarth’s earliest continent formed like Iceland
Newly discovered rocks shed light on the geology of Earth’s first continental crust
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ResearchChemistry calculations reveal Earth's inner core
Higher levels of oxygen suggest early Earth may have been hotter than some model predict
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ResearchDinosaur mass extinction may have been triggered by acid rain
Asteroid impact could have produced enough sulfur trioxide to dramatically lower ocean pH
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OpinionThe future of feedstocks
Where will our chemicals come from when the oil wells run dry? Jose Lopez-Sanchez discusses renewable feedstocks
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OpinionPeak oil is not a myth
Fracking won’t plug the gap in crude oil’s falling figures, says Chris Rhodes. Oil’s exhaustion is inevitable
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Business
Air Products looks for alternative helium sources
Concerns over supplies lead to plan to extract the gas from carbon dioxide sinks
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OpinionHelium reserves under pressure
Researchers should get ready for ballooning prices, warns Mark Peplow
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FeatureExtreme extraction
The increasing price of precious metals has prompted mineral prospectors to consider unusual places. Jon Evans looks into the future of mining
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FeatureChanging the rules of extraction
As the price of oil goes up, reserves previously uneconomical to exploit become attractive. Nuala Moran explores the chemical technology being used
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Business
OM Group to exit cobalt business
Deal worth up to $435 million includes downstream activities, in particular cobalt refining in Kokkola, Finland