2,300-year-old Chinese chemistry formula deciphered after analyzing ancient coins

Knife coins used in ancient China that were analyzed in the study. (The Trustees of the British Museum/CC BY-NC-SA 4.0) Knife coins used in ancient China that were analyzed in the study. (The Trustees of the British Museum/CC BY-NC-SA 4.0)

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Russia's call-up splits EU; Ukraine says it shows weakness

Russia's rush to mobilize hundreds of thousands of recruits to staunch stinging losses in Ukraine is a tacit acknowledgement that its 'army is not able to fight,' Ukraine's president said Sunday, as splits sharpened in Europe over whether to welcome or turn away Russians fleeing the call-up.

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