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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Ukraine's Zelenskyy: No talks with Russia's Putin if land annexed

Ukraine's president warned Tuesday that Russia's just concluded 'sham referendums' and attempts to annex Ukrainian territory rule out any talks with Moscow as long as Vladimir Putin remains president, and called for Russia's 'complete isolation' and tough new global sanctions.

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