Thirteen million people visit the Notre Dame Cathedral in Paris every year, entering through massive wooden doors at the base of towers as solidly planted as mountains. They stand in front of ...

US and Israeli strikes on Iran's nuclear facilities have reignited the debate over nuclear weapons. But what is the nuclear ...

The fire that came close to destroying the Cathedral of Notre Dame in Paris started under the roof, in the ancient wooden attic, near the base of the spire. It began a little after 6 p.m. on ...