There are many medical reasons that can cause black stools that are tarry with a foul smell, but sometimes dark stools are caused by eating certain foods or taking iron supplements. However, black stools can also be a result of bleeding, and the darker color indicates that the blood could be coming from a point in the upper gastrointestinal tract.
Gertrude Levandowski survived a 96-hour procedure at a Chicago hospital to remove a giant ovarian cyst; the longest surgery. The second longest surgery ever was 40 hours long and that was to remove 6 limbs from a 8 limed baby in India. But the most common longest surgery is spinal cord surgery it is a 14 hour surgery.
The country's latest -- billed as the world's longest -- opened at the end of 2017 in Hebei Province's Hongyagu Scenic Area. And just in case the 488 meter span (1,600 feet) over a vertical drop of 218 meters (715 feet) doesn't bring visitors to their trembling knees, there's an added sway to test the nerves at this destination.