Earth science – Page 8
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ResearchOcean chemistry changes triggered Earth's greatest extinction event
The Great Dying 250 million years ago has its roots in the intrusion of deadly sulfide rich waters into oxygenated shallows with lessons for today
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ResearchTheory of crack networks helps understand paint ageing
New model could benefit art conservators and geologists
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OpinionThe global dangers of melting permafrost
Russia’s thawing permafrost risks global warming, disease and ‘megaslumps’
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NewsUS urged to address helium cost increases
Scientific societies are calling on the US government to safeguard researcher access to affordable liquid helium
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ResearchPrimitive microbe may offer a hotbed of methane
Microbe digests complex compounds from coal and turns them into methane
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ResearchSoil sponge soaking up far less carbon dioxide than expected
Geochemistry experiments suggest the climate might warm more than current models suggest
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NewsSerious shortage of medical isotopes predicted by year’s end
US National Academies warns that ‘severe’ shortages of molybdenum-99 and technetium-99m are likely
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BusinessFertiliser firms Agrium and PotashCorp to merge
Canadian combination will create one of the largest crop nutrient companies in the world.
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NewsLack of critical elements could stymie India’s growth
Dependence on imports will make moving to a high-tech manufacturing economy more difficult
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ResearchNaturally occurring MOFs found in coal mine minerals
Rare minerals overturn conventional wisdom that metal–organic frameworks are only found in the lab
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ResearchMystery of black blotches on Smithsonian museum cleared up
Discolouration of iconic Washington, DC, building’s red stone is all down to a manganese oxide-rich rock varnish
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ResearchGreenland shark is world's longest lived vertebrate
Radiocarbon dating reveals elusive Arctic sharks could live to more than 400-years-old
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OpinionA new source of helium is good news for science
Success prospecting for helium shouldn’t halt efforts to conserve and recover this vital scientific resource
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FeatureExplosive science
Nina Notman learns the role chemistry plays in monitoring volcanoes and understanding the impact of their eruptions
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NewsScientists unearth one of world’s largest helium gas deposits
A new approach to helium recovery should take the guesswork out of finding this vital medical resource
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ResearchGreenland ice sheet recoups subliming water vapour
Newly discovered part of the water cycle acts to conserve sheet mass
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ResearchEarthly xenon’s asteroid origins reveal planet’s genesis
Discovery that atmospheric xenon is unrelated to that in the mantle hints at two separate extra-terrestrial ‘deliveries’ of the element