Diseases, Conditions, Syndromes

Uber, Lyft join airlines in ending US mask mandate

Ride-hailing companies Uber and Lyft removed mask requirements on riders and drivers on Tuesday following a federal ruling striking down the mandate.

Diseases, Conditions, Syndromes

Is COVID-19 on airplane air filters?

Ever since the onset of the COVID-19 pandemic, people have become more interested in how well airplane cabins filter and circulate their air.

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Flight is the process by which an object moves either through the air, or movement beyond earth's atmosphere (as in the case of spaceflight), by aerodynamically generating lift, propulsive thrust or aerostatically using buoyancy, or by simple ballistic movement.

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