The descending SpaceX Falcon 9 rocket first-stage booster's landing legs made contact atop a drone ship in the predawn darkness Wednesday in the Atlantic Ocean. But flames quickly billowed and leaped ...
A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...
Most who've received boosters in the US have stuck with the brand of vaccine they got initially. It's fine to switch it up. Some early studies suggest Moderna's jab is a bit stronger than Pfizer's.
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