The worry began with a set of library doors that refused to open and close, followed by windows that proved just as stubborn. Soon, cracks spidered across the drywall and ceiling, growing several inches long until school officials at Holyoke Elementary School in far northeastern Colorado had no choice but to shut their school library down.
Perhaps the culprit was a structural problem with the roof, they thought, so they began peering above ceiling tiles and climbing atop the school building to see whether the roof was compromised.
They were looking up when they should have been looking down…