History and archaeology – Page 7
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OpinionBerthelot’s bomb calorimeter
The romantic life of the man who measured the heat of combustion
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OpinionMartin Gouterman: the gay man behind the four-orbital model
Abhik Ghosh tells the story of a porphyrin chemist who was a leading figure in Seattle’s gay rights movement of the 1960s
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ResearchAncient Maya communities were first to use zeolite to purify water
2000 years ago, people in Tikal were using the world’s most advanced water purification systems
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ResearchPompeii’s paintings imperilled by precipitates
Volcanic ash protected the city’s frescos for centuries, now it might hasten their decline
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Research‘Forgotten’ Egyptian blue pigment found in Raphael fresco
Scientists speculate that knowledge of making the ‘first synthetic pigment’ wasn’t quite as lost as some have supposed
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OpinionFortin’s barometer and balance
Defining a new system of measurement required a master instrument maker
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NewsRecalibration is the biggest shake-up in the carbon dating world for seven years
Overhaul will improve accuracy and push back how far samples can be dated by 5000 years
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OpinionMarguerite Perey and the last element in nature
Kit Chapman tells the story of the chemist who discovered francium, but was almost denied the credit
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PodcastTannic acid
Tannic acid in green acorns can kill wild animals and livestock, but you can prevent poisoning with pannage pigs
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OpinionGhanaian biochemistry TV star Marian Addy
Marian Addy was the first female science professor in Ghana, who studied herbal medicine – and was a TV star
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Podcast2AP (2-acetyl-1-pyrroline)
Frances Addison on the aromatic compound found in both buttered popcorn and the bearcat’s scent glands, and responsible for the distinctive smell of both
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PodcastDexamethasone
News that this cheap, ubiquitous steroid drug may reduce deaths in Covid-19 cases has been greeted with cautious optimism
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