Long-lost page from Greek manuscript discovered in French art museum

Popular Science 

This section from Archimedes Palimpsest has a mixture of ancient geometry and Byzantine prayers. The missing page still has traces of geometric diagrams based on Greek mathematician Archimedes of Syracuse's work. Breakthroughs, discoveries, and DIY tips sent six days a week. The Archimedes Palimpsest is a Byzantine prayerbook written in 1229, but the artifact holds more than what immediately meets the eye. The original writing on its pages was erased and replaced--making it a palimpsest--a common practice during the medieval period for expensive writing materials made from animal-skin like parchment.