The Minneapolis Metrodome, ripped and deflated after blizzard-like conditions in December, will be replaced after engineers questioned the safety of the entire fabric dome. The Metropolitan Sports Facilities Commission, which operates the 28-year-old Metrodome, is taking proposals for the job, which will cost an estimated $18.3 million. Offerings are due by Feb. 23, and the work is to be completed by Aug. 1. The dome, a two-layer fabric structure supported by fan-blown air and held in place with steel cables, has been under study since December after snow and ice ripped holes in the fabric and caused it to collapse.
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.