About 470 million years ago, 7-foot-long arthropods ruled the water in what is now Morocco.
A metallic alloy of chromium, cobalt, and nickel is over 100 times tougher than graphene and gets even more resistant to damage at extremely low temperatures.
Scientists pinpointed several "made-from-scratch" genes that humans developed after splitting off from chimps.
Archaeologists in Israel have discovered new artifacts and carvings from the Cave of Salome, a place of pilgrimage for early Christians who thought that it was the burial place for Salome, the supposed midwife of Jesus.