For one project we were introduced to this website called GapMinder. It had all of these different categories from natural to unemployment. Each category showed the stats of hundreds of different countries.
I thought this project was really interesting just because you could compare the United States with all of these other countries on different topics you wouldn't even think of. You could see the life expectancy of where we live and compare it to other countries that are about 10-20 years less than ours. You could see if a certain category caused an increase or decrease in other categories. In our GapMinder project we compared income per person and mean years in school. I really like this project because they were both interchangeable with causation.