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The US Department of Health and Human Services' (HHS's) COVID-19 vaccination campaign saved $732 billion by averting illness and related costs during the Delta and Omicron variant waves, with a return of nearly $90 for every dollar spent
Scientists Discover New Property of Light. Photons can obtain substantial momentum, similar to that of electrons in solid materials, when confined to nanometer-scale spaces in silicon. The finding could lead to improved solar power systems, light-emitting diodes, semiconductor lasers, etc.
Lampreys have ‘fight or flight’ cells, challenging ideas about nervous system evolution
Small study (n=82, two-thirds women) finds that people have on average 2.5 "belly laughs" per day, and experience "a fit of laughter" about once every four days.
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