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Why doesn't the US use the metric system?Identity, politics and good, old fashioned resistance to change.
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Why hasn't contact tracing managed to slow the massive surge of coronavirus in the US?Contact tracing must be paired with other strategies to reduce viral spread.
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The US Constitution: Facts about the country's founding documentWritten over 200 years ago, the Constitution is a legal document of Articles and Amendments that form the foundation of the federal government, state authority and citizen rights.
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When will 'social distancing' end?The answer depends on when scientists can access reliable data, and when most members of the public adhere to the measure, experts say.
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First coronavirus vaccine trial in the US is recruiting volunteersForty-five people will be enrolled in the preliminary safety trial of the new vaccine.
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Are US communities and hospitals ready to take on COVID-19?An outbreak of COVID-19 in the U.S. seems inevitable. How will local governments and health care facilities respond?
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A US coronavirus outbreak is almost inevitable. Here's how you can prepare.The CDC has said we need to prepare for a widespread COVID-19 outbreak. How?
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How far could the new coronavirus spread?The transmissibility of the virus depends on many factors, some of which remain unknown.
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Coronavirus screening expands to 20 US airports; researchers start work on a new vaccineU.S. health officials are working to prevent an outbreak at home while developing treatments and preventative countermeasures.
