An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

At some point during the evolution of life on Earth, inorganic matter became organic, nonliving matter became living. How ...

Besides being the male leads of their respective hit television series, these characters know the value of owning a decent plain white T-shirt. Comfy, classic, and reliable, a quality, well-fitting ...

As essential as rugs are for home decorating, they may run you hundreds, if not thousands, of dollars, so when an impressive sale comes along, it’s always worth snagging a design or two while the ...