SAN FRANCISCO -- By now you have heard about the huge demand for ventilators to help patients infected with COVID-19. But why are they needed and how are they used? That's the question we posed to Dr.

Laundry can be frustrating, even for a laundry enthusiast. It’s time-consuming, unceasing and there is so very much that can go wrong. For many of us, it’s one of those chores we learned to do from ...