Rich Scherr is a seasoned journalist and editor who has traveled across the U.S., Canada, and Europe, and spent more than a decade reviewing hotel room.

Here’s how it works. If you’re in the market for running sunglasses but aren’t sure where to start—or wondering if you even need a pair based on your local weather—you’re not alone.

Whether you’re traveling with one pair of sunglasses or your full collection, these sturdy cases will protect your precious lenses. Theresa Holland is a freelance commerce writer and editor ...

The Oakley Men's OO9290 Jawbreaker Shield Sunglasses are a high-performance pair of sunglasses designed for sports and outdoor enthusiasts. Expert Comment- Because they strongly emphasise ...

Each atom then has a complete outer shell of electrons. The slideshow shows how a covalent bond forms between a hydrogen atom and a chlorine atom, making hydrogen chloride. A simple molecule ...

When two hydrogen atoms get close enough, the electron from each atom feels an attraction from the proton in the other atom's nucleus. This attraction pulls the atoms together. The electrons end up ...

The covalent radius (a measure of how large individual atoms are) shows different trends if you are moving across a period or down a group. A comparison of the relative covalent radii of atoms is ...