This is the second of a multi-part podcast series on the exhibit, "Earth Lab: Degrees of Change," from the Koshland Science Museum. You can participate in the exhibit either by visiting the museum in Washington, DC or online at:
http://koshland-science-museum.org
In this podcast we will look at the trends that compare today's climate with that of the distant past. They include:
1. Tree Rings
2. Instrumental Records
3. Ice Cores
4. Corals