National Science Foundation
National Science Foundation: Ice Core Facility (Nsf Icf): About Ice Cores
A fantastic resource for learning about how ice cores are collected, the information we can learn from them about Earth's climate history, the types of research being done with them, and how they are stored. Includes lots of videos.
PBS
Pbs Learning Media: Greenland Ice Sheet Project 2: A Record of Climate Change
Using images and graphs, this interactive resource illustrates scientists' efforts to study Earth's climatic history for the last 250,000 years by drilling into the Greenland Ice Sheet and examining ice cores. Includes background reading...