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  2. Perplexity AI - Wikipedia

    en.wikipedia.org/wiki/Perplexity_AI

    Perplexity AI is a conversational search engine that uses large language models (LLMs) to answer queries using sources from the web and cites links within the text response. [ 3 ] [ 4 ] Its developer, Perplexity AI, Inc., is based in San Francisco, California .

  3. Should we wear masks again? Covid guidelines experts ... - AOL

    www.aol.com/wear-masks-again-covid-guidelines...

    The uptick of Covid transmissions this summer has raised questions about whether or not certain safety measures such as wearing masks should be brought back. ... locations are now required to wear ...

  4. Perplexity says will defend itself in the Dow Jones, New York ...

    www.aol.com/news/perplexity-says-defend-itself...

    The media conglomerate News Corp-owned publishers sued California-based Perplexity on Monday, claiming that the startup engages in a "massive amount of illegal copying" of their copyrighted work.

  5. 'When in doubt, wear a mask': Expert explains how ... - AOL

    www.aol.com/news/doubt-wear-mask-expert-explains...

    As the U.S. faces a surge of new COVID cases due to the Delta variant, health officials are now recommending that Americans mask up again.

  6. Face masks during the COVID-19 pandemic in the United States

    en.wikipedia.org/wiki/Face_masks_during_the...

    A public service announcement from the Government of California encouraging people to wear masks to "slow the spread". In late March 2020, some government officials began to focus on the wearing of masks to help prevent transmission of COVID-19 as opposed to protecting the wearer; former FDA Commissioner Scott Gottlieb stated in a report that face masks would be "most effective" at slowing its ...

  7. Workplace hazard controls for COVID-19 - Wikipedia

    en.wikipedia.org/wiki/Workplace_hazard_controls...

    Use of masks for source control is still recommended in times of high viral activity, but the CDC did not provide numbers for benchmarks. The new policies are thought, according to the New York Times, based on various citations to medical literature, to increase mortality among vulnerable patients, especially those with cancer .

  8. Perplexity AI triples its valuation in about 6 months with ...

    www.aol.com/perplexity-ai-triples-valuation-6...

    Perplexity AI reportedly secured $500 million in its latest funding round this month. That puts the startup's valuation at $9 billion, tripling its worth within six months.

  9. Cloth face mask - Wikipedia

    en.wikipedia.org/wiki/Cloth_face_mask

    A cloth face mask is a mask made of common textiles, usually cotton, worn over the mouth and nose.When more effective masks are not available, and when physical distancing is impossible, cloth face masks are recommended by public health agencies for disease "source control" in epidemic situations to protect others from virus laden droplets in infected mask wearers' breath, coughs, and sneezes.