Parents with celiac disease often jump through hoops over breastfeeding and when to give children their first bread or other food containing gluten, but a study published Wednesday suggests it doesn’t matter much in terms of whether the child will develop celiac disease.
A variation in a single gene may explain why some monarch butterfly populations developed a marathoner’s efficient physique, while some muscled up and settled down, according to a new study.
An estimated 35,000 walruses packed a stretch of Alaskan shoreline late last month, a phenomenon that's being chalked up to diminishing sea ice and alarmingly warm ocean temperatures.