There are more questions than answers after a 12-story building collapsed in Surfside, Florida, on Thursday.
Local officials appeared to have few ideas about what may have caused wings of the 136-unit building to inexplicably crumble.
Scientists, however, have long noted the risk of building on the shifting sands of a barrier island like Miami Beach, especially with rising sea levels. That may not be the reason for this collapse, but it remains an engineering challenge in the region.
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