Scientists do experiments.
Scientists test things to learn what they're like.
Visit the testing pod to check out tools scientists use to gather samples and run tests. These instruments are invented for investigating life on Earth and are used deep in the depths of the oceans, with marine mammals in water and air, and to sample the environmental toxins that accumulate everywhere. The core samples represent a cross-section of the record of deposits on the seafloor over geological time. Dr. Delaney subjects the cores to a wide variety of tests to gather clues to Earth's history. Take a trip back in time to the Cretaceous period.