"Up to this stage of the experiment, the crows had never been tasked with detecting a quadrilateral intruder amid an array of other quadrilaterals," the authors note in their research paper. This ...

Hand pain can be caused by an injury or medical condition. Your hands are made of many parts, including bones, ligaments, tendons, nerves, skin, and other structures. These structures can also be ...

That includes the latissimus dorsi, trapezius, rhomboid, and levator scapula muscles in your back. In your core, the outermost muscle is the rectus abdominus. You can injure these muscles through ...