The Nebra Disc (front cover) informs archaeologists that the Bronze Age people of Northern Europe were more sophisticated than once thought. In an area traditionally seen as primitive and barbaric, it would seem a complex religion had flourished more than 3,600 years ago. "We have been dramatically underestimating the prehistoric peoples," says Harald Meller, Head Archaeologist at the Museum of Halle in Saxony-Anhalt, where the Nebra disc was discovered.