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.

Learn which beverages you can drink to relieve acid reflux and GERD (such as plant milk), what to avoid (orange juice), and some habits that can help.

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.