Folate and folic acid are different forms of vitamin B9. While there’s a distinct difference between the two, their names are often used interchangeably. Even professionals can be confused about ...

Folic acid is a synthetic form of vitamin B9 that's often added to fortified foods and used in supplements. Learn about its benefits and sources, your risk of deficiency, and more.

Hyaluronic acid is an ingredient most of us have heard of, whether or not we’re skincare aficionados. An essential molecule that’s naturally occurring in the body, hyaluronic acid is renowned for its ...

News about acid rain, including commentary and archival articles published in The New York Times.

Learn the cause and effect of acid rain. Read environmental news articles on how acid rain takes nutrients from the soil, leads to stunted forests and more.