NASA visualizers take data – numbers, codes – and turn them into animations people can see and quickly understand.

Drought conditions have affected much of the U.S. Southwest and Central Plains in recent years. But scientists now believe future droughts in the last half of this century could be the worst in the past millennium.

Learn about the different cloud types and their names. Match cloud photos and names by cloud type and for all types. Evaluate the types of clouds represented in various data displays.

Watch the NOVA PBS video - The Climate Wild Card about the different effects of clouds on climate and Earth's energy budget. Then answer questions and brainstorm to complete a flow chart of events that might occur if the percentage of absorbing clouds increases.