Part 1 –
Sadly the Pollen Viewer visualization tool no longer works; however, there are animated gifs from the website that let you see the large-scale effects of climate change in North America during past 21,000 years.
Part 2 –
Both the Pollen Viewer digital maps and the analysis software, Analyzing Digital Images, are available free on the Internet.
Part 3 –
Select an area on a Pollen Viewer map, and calculate the abundance of plant species over time within this area.
Part 4 –
Use available spreadsheet software, such as Microsoft Excel or Open Office, to manipulate the data and create graphs.