If you’ve ever tried to lose excess weight, you’ve probably gotten this advice: drink more water. Or perhaps it was more specific: drink a full glass of water before each meal. The second suggestion seems like a reasonable idea, right?…

Feeling sad, anxious, or angry at times is a normal part of the human experience. But do you — or someone you’re close to — seem to experience these and similar emotions more quickly, more frequently, and more intensely than…

Animals renowned for their outstanding night vision include owls, cats, tarsiers (a tiny primate in Southeast Asia) — and even the dung beetle. But humans? Not so much. Over time, many people suffer from night blindness, also known as nyctalopia.…