It's an expanding problem.
Irrigation, writing, trigonometry, calculus — many important discoveries and innovations were made in "the land between two rivers."
Would you believe that one nerve controls everything from your ability to feel the skin on your ear to the speed of your heart and your digestive system? Get to know the vagus nerve
Thirty years ago this November, the fall of the Berlin Wall marked the end of the Cold War — but what would have happened if East and West remained divided?
Why do dolphins look so much like sharks? Why do pandas have thumbs? Because evolutionarily speaking, sometimes there tends to be one best way to get the job done.
Tuberculosis is one of the top 10 causes of death worldwide, affecting mainly children and the elderly.
Nope, these cucumbers aren't plants. Sea cucumbers are colorful, squishy sea creatures that live on the ocean floor.