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.
When finished, the Menai Suspension Bridge, with its 580 foot center span, was the longest span in the world. Sailing ships with tall masts could sail under it, a remarkable feature for its day. The bridge was a highpoint of Thomas Telford's career, and proved the effectiveness of suspension bridges.he Menai Suspension Bridge is still in service, more than 180 years after its opening. And despite the improvements over the years, it retains the graceful form of Telford's original design.