Students will analyze a line graph that shows how the surface temperature and air temperature values change over the course of 24 hours.

Watch NASA videos about aerosols and volcanic ash.

Students will synthesize information from maps that show population, concentrations of PM_2.5, and PM_2.5-attributable mortality across the globe in order to draw conclusions about the relationship between particulate pollution and human health. 

Students analyze a graph that illustrates the change in global surface temperature relative to 1951-1980 average temperatures.

Students watch a NOVA PBS video about the different effects of clouds on climate and Earth's energy budget. Then they answer questions and brainstorm to complete a flow chart of events that might occur if the percentage of absorbing clouds increases.