German prosecutor officials are investigating possible criminal falsification of construction survey data on Cologne’s roughly $550 million North-South urban rail project, scene of a building collapse last March. In parallel, diaphragm walls being used in construction of one the line’s underground stations have been found to be about 80% short of specified dowel bars. These, as yet unconnected, findings recently emerged from investigations into the March 3, 2009 collapse of the city’s historical archive building. The building was undermined when a section of railroad tunnel under construction in nearby Waidmarkt collapsed. No official cause for the tunnel failure has yet
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.