SCIENCE Researchers have completed the first-ever comprehensive digital map of our seafloor’s sediment composition, which covers 70 percent of the planet’s surface. (Popular Science) Read more about mapping the seafloor with our profile of geologist Christina Symons. Teachers, scroll down for a quick list of key resources in our Teachers’ Toolkit. Discussion Ideas Take a look at the legend for the spectacular new seafloor map. … Continue reading First Digital Map of the Seafloor Reveals Secrets in the Sediments