People fast for many reasons — religion, weight loss, blood sugar control, and even political protest. Here's what actually happens in your body when you fast.
Visiting the North Pole is possible but far harder than most people expect. Here's why floating ice, closed routes, and huge costs keep it out of reach.
Dead or peeling skin on the penis can have many causes, from friction and dryness to skin conditions and infections. Here's how to identify and treat it.
Delusional thinking has real causes, from sleep deprivation to medical conditions. Learn what drives false beliefs and what treatment options are available.