Notre Dame’s roof gets rebuilt with medieval techniques

If time travel was possible, medieval carpenters would surely be amazed to see how woodworking techniques they pioneered in building Notre Dame Cathedral more than 800 years ago are being used again today to rebuild the world-famous monument's fire-ravaged roof. Certainly the reverse is true for the modern-day carpenters using medieval-era skills. Working with hand axes to fashion hundreds of tons of oak beams for the framework of Notre Dame's new roof has, for them, been like rewinding time. It