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.
10 of the world's longest bridges. Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds. Longest suspension bridge â The world's longest suspension bridge, the Akashi-Kaikyo Bridge in Japan, spans the Akashi Strait that separates Kobe from Iwaya. Longest inhabited bridge â KrÃ¤merbrÃ¼cke, the longest inhabited bridge, is located in Erfurt, Germany. It's a stone arch bridge dating back to 1325.