In patchy spots near Aachen, Germany, rows of concrete pyramids make a zig-zag pattern that is as beautiful and symmetrical when viewed from the air, as it is haunting or menacing looking at down on ...

Lloyd Woo eases a motorboat through the clear blue waters of the Bismarck Sea in the southwestern Pacific, to the edge of a coral reef. When he sights a specific cluster of coconut palms on the shore ...