Broken angels: Inside the lab working to restore Notre Dame

CHAMPS-SUR-MARNE, France (AP) — The golden angel once glimmered majestically from Notre Dame’s vault.
Now, with a broken nose, chipped gold-leaf and a smashed bust, it stares up blankly at a warehouse roof in the outskirts of Paris where blackened fragments of the famed cathedral’s stained glass mingle with organ pipes and jagged vault stones.
Scientists at the French government’s Historical Monuments Research Laboratory are using these objects as clues in an urgent and v