The polar vortex is set to plunge temperatures across much of the U.S., bringing severe cold and snow, lasting into January.
Read moreThe US is experiencing a 'quad-demic' as flu, COVID-19, RSV, and norovirus infections increase this winter, prompting health officials to reintroduce safety measures.
Read moreYing Ying, Hong Kong's oldest panda mom, cares for her twin cubs together for the first time ahead of their public debut, expected after Lunar New Year.
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