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.
Iranâs longest arch bridge, named Karun 4, was inaugurated on Wednesday in Shahr-e-Kord, Chaharmahal-Bakhtiari Province with First Vice President Esâhaq Jahangiri in attendance. At 378 meters long and 300 meters wide, Karun 4 is the largest construction of its kind in the country, Mehr News Agency reported. Jahangiri said construction of the bridge under sanctions is a testament to Iranâs engineering capabilities and shows the Islamic Republic has achieved independence.