Black poop, or melena, can happen when there is bleeding in the upper digestive tract, such as the stomach or esophagus. As the blood moves through the intestines, it turns dark, making stool appear ...

White T-shirts get a lot of attention, but let’s not forget their equally versatile counterpart: the exceedingly wearable, deceptively simple black T-shirt. It’s a staple you can wear to work ...

Degu: Proof an Old Rodent Can Learn New Tricks Degus demonstrate the ability to train ... In an act of more sophisticated tool use, black fire ants used sand to dilute otherwise deadly sugar water so ...