Vatican officials said that Pope Francis had developed pneumonia in both lungs, further complicating the pontiff's recovery.

Pope Francis is facing complex medical problems. A day after the Vatican said he has a ‘polymicrobial infection’ of his ...

Bringing aromas indoors with the help of chemical products -- yes, air fresheners, wax melts, floor cleaners, deodorants and others -- rapidly fills the air with nanoscale particles that are small ...