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.
It has a central span of 4,260 feet (1,298 m) and was the longest suspension bridge in the world at the time of its completion in 1964, surpassing the Golden Gate Bridge by 60 feet, until it was in turn surpassed by 366 feet by the Humber Bridge in the United Kingdom in 1981.