Four scientists will be living on a mock Mars base for a year that has been built inside the Johnson Space Center in Houston.
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A growing number of businesses are requiring their employees to get vaccinated against COVID-19, alarmed by the rise of the more contagious delta variant and frustrated that vaccination rates in the U.S. have plateaued.
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Study: Vaccinated People Can Carry as Much Virus as Others
Scientists who studied a big COVID-19 outbreak in Massachusetts concluded that vaccinated people who got so-called breakthrough infections carried about the same amount of the coronavirus as those who did not get the shots.
Russia Blames Space Station Lab Incident on Software Failure
A Russian space official has blamed a software problem on a newly docked science lab that briefly knocked the International Space Station out of position.
Biden Orders Tough New Vaccination Rules for Fed Government
The Biden administration has announced sweeping new pandemic rules for federal workers and some contractors.
FDA Allows Automatic 'Generic' Swap for Brand-Name Insulin
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CDC Reverses Course on Indoor Masks in Some Parts of U.S.
The Centers for Disease Control and Prevention is reversing course on some masking guidelines. The agency announced new recommendations Tuesday that even vaccinated people should return to wearing masks indoors in parts of the U.S.
Need2Know: Vaccine Mandates, Osaka Out & LeVar Burton Takes Jeopardy!
Vaccine Mandates, Osaka Out & LeVar Burton Takes Jeopardy!
