It's very sad to watch this iconic symbol of Christianity for the last 860yrs burn to a total loss.
In looking at the flames, there is a conspicuous yellow/greenish smoke that is given off by lead and some zinc paints, I wonder where the lead is going to land? It won't stay in the atmosphere long before it descends to earth. The news said there was something like 250 tons of lead just in the spire itself.
Gonna be a lot of lead cleanup besides the fire itself. Sad, very sad day in Paris, a loss that will be mourned by the entire world.