Tree Rings: Counting the Years of Global Warming part of CLEAN Collection

This video describes the role that dendrochronology plays in understanding climate change, especially changes to high elevation environments at an upper tree line. Dendrochronologists from the Big ...

Educator Guide: Lab 1- Launching an Expedition part of CLEAN Collection

Students are charged with thinking about what it takes to 'do science'. They are introduced to the science of dendrochronology and learn how tree-ring science is executed.

Oceans and Atmosphere Example part of CLEAN Collection

This unit allows students to investigate past changes in Earth's climate. Students first explore relationships in climate data such as temperature, solar radiation, carbon dioxide, and ...