Females of some whale species have evolved to live drastically longer lives so they can care for their families, new research shows. Females of some whale species have evolved to live drastically ...

releasing eggs, which can potentially be fertilized by sperm producing female sex hormones, such as progesterone and estrogen providing an environment for a fertilized egg to develop during pregnancy ...

With detectives the likes of Eliza Scarlet and Annika Strandhed defying stereotypes and winning our admiration on MASTERPIECE Mystery! on PBS, it’s the perfect time to explore the fascinating range of ...

A new protein analysis of Homo naledi skeletons reveals a curious twist—none of them seem to have Y chromosomes. Researchers have excavated hundreds of Homo naledi bones from the cave system known as ...

Lower back pain in women can stem from menstrual cycle-related conditions like premenstrual syndrome (PMS), premenstrual dysphoric disorder (PMDD), endometriosis, or dysmenorrhea, as well as pregnancy ...

In many fish species, water temperature determines the sex of the fry. This biological mechanism threatens to wipe out entire populations because of a shortage of females in the face of global warming ...

When you get a diagnosis of breast cancer, your doctor will use several tests to learn details about your tumor and the best way to treat it. The FISH (fluorescence in situ hybridization) test checks ...