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.
25 de Abril Bridge. The 25th April Bridge, also known as 25 de Abril Bridge (Ponte 25 de Abril in Portuguese) is the longest suspension bridge in Europe. It has two levels, the top level is for cars and the lower, which was added in 1999 is for trains. The overpass took 45 months to build.