Most cases of black stools are from eating black foods or iron supplements. The most common condition causing black stools is a bleeding ulcer. Black stools caused by blood indicate a problem in the upper digestive tract. Blood in the stool can be detected through a stool test.
Akashi-Kaikyo Bridge, Japan. The Akashi-Kaikyo Bridge, spanning the Akashi Strait, connects the city of Kobe and Awaji Island in Hyogo Prefecture. It is the world's longest suspension bridge, with its central span measuring 1,991m. Its made up of six lanes with a combined length of 3,911m.
Brave walkers cross one of the world's scariest bridges, which is 650ft high and the length of six football pitches. 1  Vertigo-inducing walkway spans the picturesque Krasnaya Pollyanna valley in Sochi, Russia. 2  At 1,800ft long and 650ft high it is set to be declared the world's longest pedestrian suspension bridge.