A visualization of climate model data from the National Center for Atmospheric Research Courtesy of UCAR

The Very, Very Simple Climate Model
What would happen if we released more or less carbon dioxide (CO2) into the atmosphere? Find out with the Very, Very Simple Climate Model. This model will calculate the amount of CO2 in the atmosphere and the average global temperature based on CO2 emissions.

The Carbon Cycle Game
Say you're a carbon atom released from a smokestack as part of the greenhouse gas carbon dioxide. What happens to you? Learn what it's like to be a carbon atom traveling the carbon cycle by playing the Carbon Cycle Game.

Climate Crossword Puzzle
Test your climate knowledge with this crossword puzzle - available in beginner, intermediate, and advanced versions.