BERLIN, GERMANY—According to an Associated Press report, a Roman road was discovered in western Germany by construction workers preparing the local Christmas market. Aachen city archaeologist Andreas Schaub said the road measures about 20 feet wide and is thought to date to the second century A.D. The road may have connected Aachen to what is today the city of Maastricht in the Netherlands. For more, go to “Slime Molds and Roman Roads.”