Scientists may have just determined the worst place in the world for arachnophobes. In a network of caverns below the Greek-Albanian border known simply as Sulfur Cave (already sounds like a charming ...

Early arthropod specimens don’t have claws like these. Instead, Cambrian arthropods usually have an antenna in that position.

Deep beneath the border between Albania and Greece, a single spider web sprawls across rock like a living carpet, turning a toxic cavern into a crowded neighborhood. What looks at first like a ...