Ayesta, RD, owner of Planos Nutrition in Tampa, Florida. The active ingredient in apple cider vinegar is acetic acid, produced when apples are fermented and exposed to certain enzymes.

He is also the author of dozens of how-to books covering a wide spectrum ranging from Apple devices and cameras to photo editing software and PalmPilots. He drinks a lot of coffee in Seattle.

Heart rate sensors? A touch screen case? Here's what might be coming to Apple's new noise-canceling earbuds later this year. Plus, there's one key feature I'd like to see. Executive Editor David ...

Over time, untreated GERD can cause inflammation or damage to the esophagus. Certain drinks may not cause acid reflux symptoms, while others may help relieve symptoms you’re experiencing.