Take a walk in the woods. Do the plants and trees look the same as years ago? Kevin Griffin is a biologist who studies the physiology (such as photosynthesis and respiration) of plants, especially as they respond to environmental change. He works both in a Lamont laboratory and at field sites worldwide. Dr. Griffin will describe his research on plant and ecosystem responses to climate change, including results from two of his current field sites: the tundra of Alaska, and forests from New York City to the Catskill Mountains.