Melissa Lau spent a month in the tundra ecosystem gathering data using a device called a Greenseeker. This device measures exactly how green a plant is by calculating its NDVI or Normalized Difference Vegetation Index. In this lesson, students will explore light waves, how they interact with plants, and find out how green is green.
WHOI is the world's largest private, nonprofit ocean research, engineering and education organization. This site has information on oceans from climate to ocean life to ships and technology.