TOKYO, Japan (AFP) – Hundreds of horseshoe crabs — known as “living fossils” because they are among the Earth’s oldest creatures — have been found dead in southern Japan, confounding experts who study the alien-like sidewalkers. Horseshoe crabs, known for their blue blood, are a regular summer visitor to tidal flats in southern and western Japan, including one near Kitakyushu city where they lay their eggs. Some invariably die in the process, but this year […]