Aquatic Fossil With Hammerhead

Not all scientific insights require a $1.1-billion experiment to observe gravity waves, or demand a giant particle collider be buried under Europe. Sometimes all that's needed are a few bucks worth of modeling clay and toothpicks -- and, well, a pair of priceless 250-million-year-old fossils.

Not all scientific insights require a $1.1-billion experiment to observe gravity waves, or demand a giant particle collider be buried under Europe. Sometimes all that's needed are a few bucks worth of modeling clay and toothpicks -- and, well, a pair of priceless 250-million-year-old fossils.