01:31
Making the Pieces Fit: Coastlines and Jigsaw Puzzles
The scientific work that would eventually lead to the Theory of Plate Tectonics began with observations that the coastlines of Africa and South America are strikingly similar.
02:03
The Ocean's Memory: Sediments and Earth's Magnetic Field
As with climate changes, there have been some unexplained aberrations in Earth's magnetic field during the recent past. Marine sediments provide important information that may help scientists better understand those aberrations.
06:22
The Ocean's Memory: Obtaining and Analyzing Sediment Samples
Despite its temporary nature, sediment remains uniquely valuable. As a result, oceanographers have worked hard to refine the process of obtaining and analyzing sediment samples.