History and archaeology – Page 22
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OpinionHow Roosevelt's Tree Army were poisoned
In the first of a new column, Raychelle Burks investigates a mass arsenic poisoning during the Great Depression
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OpinionHumphry Davy and cutting our carbon footprint
A 200 year old electrolysis experiment could hold the key to sustainable fertiliser production
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ResearchDye detective work uncovers Perkin’s chemistry secrets
The pioneering Victorian chemist didn’t reveal all in his patent on the first synthetic purple dye
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ResearchChemists find mummified legs may belong to Queen Nefertari
Gas chromatography reveals legs belong to one of Egypt’s lost queens
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ResearchMpemba effect in hot water after doubt cast on its existence
Frosty reception for claim that effect where hot water freezes faster than cold has no basis
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ResearchMiddle Eastern bitumen at Sutton Hoo rewrites trade history
The black lumps provide the first evidence for a bitumen trade network between the British Isles and the Middle East
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OpinionSolving the riddle of the glowing stones
The mysterious luminescence of the Bologna Stone was the wonder of the 17th century
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ResearchChemists uncover original colour of Finnish palace clock
Clock faces changed back to black after spectroscopy reveals paint composition