As legal sports gambling proliferates, the number of Americans betting on the Super Bowl and the total amount they’re wagering is surging — although most of the action is still off the books.An estimated 1 in 5 American adults will make some sort of be…

Visitors to one of Florence’s most iconic monuments — the Baptistry of San Giovanni, opposite the city’s Duomo — are getting a once-in-a-lifetime chance to see its ceiling mosaics up close thanks to an innovative approach to a planned restoration effor…