Amino acid molecules are made of four main elements. You may remember them from science class: carbon, hydrogen, oxygen, and nitrogen. These elements form the same amino acid structure.

There's a running joke in my family that centers around my older sister's absolute refusal to use a cup or mug with ingrained coffee stains. Although a cup has clearly been washed thoroughly ...

Using lactic acid for skin care can help you have a smoother, brighter complexion. As a gentle alpha hydroxy acid (AHA), lactic acid removes dead skin cells, lightens dark spots, and improves the look ...

That’s a different story. Because it’s typically light-colored and has a porous composition, grout is prone to staining. In a tiled entryway or mudroom, dirt and grime are the usual culprits ...

The French Ministry of Culture has selected eight finalists to design replacement windows for the celebrated cathedral—and not everyone is happy Julia Binswanger Daily Correspondent Stained ...

“How on earth do you live with yourself?” someone inquires of the titular newspaper scribe in “The Critic.” Joyously, seems to be the answer: When Jimmy Erskine sweeps into a theater ...

A young golden eagle attacked a toddler in Norway, clawing her so badly that she needed stitches, in what an ornithologist says is likely the bird's fourth such attack on humans in the past week.