Ukraine acknowledged difficulties in fighting in its east as Russian forces captured territory and intensified pressure on two cities ahead of an EU summit this week expected to welcome Kyiv's bid to join the bloc.
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Former Tesla Inc employees have filed a lawsuit against the U.S. electric car company alleging its decision to carry out a "mass layoff" violated federal law as the company did not provide advance notice of the job cuts.
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The world's top coal consumer relies on coal for 60% of its electricity.
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A small Chinese study showed neutralising antibodies against some Omicron sub-variants were largely undetectable after two doses of a Sinopharm COVID vaccine, with a booster shot only partly restoring them.