Most people use too little SPF. Here’s the two-finger rule, the quarter-size guide, and the best ways to reapply over makeup.

If there were only one skin-care product you could buy, face sunscreen should be it. Along with helping you sidestep painful sunburns while lounging on the beach or doing outdoor workouts, it’s also ...

Abstract: This paper proposes a novel integrated aerial-terrestrial multi-operator network in which each operator deploys a number of unmanned aerial vehicle-base stations (UAV-BSs) besides the ...