If you only have a single-layer or loose-fitting mask, it may be smart to wear two at once. To double up, wear one cloth mask over another, or wear a cloth mask over a surgical mask. Experts have long ...

If possible, wear a surgical mask (aka one of the disposable masks usually made of blue paper) as your first layer, then add a cloth mask on top, Dr. Subramanian said. That's because the cloth mask ...

• Three-layer masks have been found to keep you most protected from COVID-19 viral particles. • Recent research found that only about 30% of large respiratory droplets are blocked by single-layer ...

Sitting quietly in the Tools panel of the popular image editors Adobe Photoshop, Photoshop Elements, and Pixelmator, is the Gradient tool, a wonderfully useful painting tool that lets you create a ...