Sediment Core Close-Up
These deep-sea sediment cores were drilled from beneath the seafloor, and hold...
Coral Growth Rings
Ultraviolet light illuminates the growth rings in a cross-section of a 44-year-old...
What is coral bleaching? These white corals in the Gulf of Mexico’s Flower Garden...
Rudist clams are mollusks that went extinct about 65 million years ago. They were...
What is El Nino?
This activity explores the potential for climate variability and change to trigger...
Fri, 03/19/2010 - 14:51
Secrets of the Sediments
In this activity, students graph and analyze data from sediments collected off the...
Mon, 03/15/2010 - 15:06