1. NASA's Climate Time Machine.
Click on the image to track changes in sea level, sea ice, carbon emissions and global temperatures over time.

2. Explore climate conditions projected for the coming decades for any county in the United States via NOAA's Climate Explorer.

3. Key Indicators
Click on the image to check Earth's vital signs (CO2, sea level, global temperatures, and arctic sea ice) from NASA's Global Climate Change website. http://climate.nasa.gov/