Researchers think undersea cliffs near Mexico may hold geological clues to the dinosaurs' demise. In March 2013, scientists used multi-beam sonars to create the first detailed map of the so-called Campeche Escarpment.
Researchers think undersea cliffs near Mexico may hold geological clues to the dinosaurs' demise. In March 2013, scientists used multi-beam sonars to create the first detailed map of the so-called Campeche Escarpment.